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ASRock H170M PRO4S Review | 107 Data compared

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  • Avg. price in UK: ~£90
  • Avg. price in US: ~$100
  • CPU socket: LGA 1151
  • Chipset: Intel H170
  • Form factor: microATX

ASRock H170M PRO4S review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

4.6

Overall score

What it is: An overall evaluation of the motherboard's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best motherboards on the market.

Score components:

90.0%

4.4

Technical Score

10.0%

6.5

User score

Poor
4.4

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

5.7

Memory

16.0%

4.9

Platform & Features

16.0%

4.9

Storage

15.0%

5.3

Network

13.0%

1.6

Ports & USB

8.0%

2.6

Expansion

8.0%

3.9

Power & Cooling

5.0%

5.7

Audio

Poor
6.5

User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

7.8

User reviews

30.0%

3.5

Popularity

User score:
United Kingdom
amazon
3.9
(39)
United States
Amazon_logo.png
3.9
(39)

(Reviews last updated: May 2026)

Good
  • 3.3
    Gaming

    Score components:

    28.0%

    4.6

    VRM phases

    22.0%

    3.3

    N. of M.2 sockets

    18.0%

    4.6

    LAN speed

    17.0%

    1.8

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

  • asrock-h170m-pro4s
asrock-h170m-pro4s

Best prices in UK

Best rankings

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Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The ASRock H170M Pro4S is a Micro ATX motherboard featuring the Intel H170 chipset and LGA 1151 socket, supporting 6th and 7th Generation Intel Core processors. Key specifications include four DDR4 DIMM slots for up to 64GB of 2133MHz memory, dual PCIe 3.0 x16 slots supporting AMD Quad CrossFireX, and a fast Ultra M.2 (PCIe Gen3 x4) socket for NVMe SSDs. Its main pros are the robust 'Super Alloy' build quality with solid capacitors, efficient 6-phase power design, and comprehensive storage options including six SATA3 ports with RAID support. However, it has notable cons such as the lack of overclocking support for 'K' series CPUs, the absence of a VGA port (offering only HDMI and DVI-D), and limited 7.1 audio access that requires using front panel headers due to fewer rear audio jacks.

Technical Specifications of ASRock H170M PRO4S

Technical Score

What it is: An assessment of the motherboard's technical performance, covering key areas such as power delivery, CPU and memory support, expansion, storage, connectivity, cooling, BIOS features, and design.

When it matters: When you want to compare motherboards based on technical performance and available features.

Score components:

19.0%

5.7

Memory

16.0%

4.9

Platform & Features

16.0%

4.9

Storage

15.0%

5.3

Network

13.0%

1.6

Ports & USB

8.0%

2.6

Expansion

8.0%

3.9

Power & Cooling

5.0%

5.7

Audio

4.4
ASRock H170M PRO4S has a technical score of 4.44 points, which is lower than that of 90% of products in this category.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the motherboard.

When it matters: When you want to understand how a motherboard performs in real-world builds and how reliable it is in terms of stability, BIOS usability, connectivity, and long-term ownership.

Score components:

70.0%

7.8

User reviews

30.0%

3.5

Popularity

User score:
United Kingdom
amazon
3.9
(39)
United States
Amazon_logo.png
3.9
(39)

(Reviews last updated: May 2026)

6.5
ASRock H170M PRO4S has a user score of 6.51 points, which is lower than that of 87.9% of products in this category.
Popularity
What it is: An indicator based on the number of reviews received by the motherboard.
When it matters: When you prefer a motherboard that has already been bought and reviewed by many other users.
3.5
ASRock H170M PRO4S has a popularity of 3.5 points, which is lower than 55.3% of products in this category.
Ratio quality/price

What it is: An indicator that combines the motherboard's overall rating with its cost.

When it matters: When you are looking for a motherboard that offers a strong balance of features, performance, and price.

Score components:

60.0%

4.6

Overall score

40.0%

10

Price

6.3
ASRock H170M PRO4S has a quality-to-price ratio of 6.3 points, which is lower than 85.5% of products in this category.
Brand name
What it is: The brand that makes the motherboard.
When it matters: When you have a brand preference for support, BIOS, or build quality.

Importance: MEDIUM

Asrock
CPU socket
What it is: The socket type the motherboard is built to support.
When it matters: When you need the motherboard to match a specific CPU.

Importance: HIGH

LGA 1151
ASRock H170M PRO4S uses the LGA 1151 CPU socket, which is less advanced than that of 70.5% of motherboards and equal to that of 13.8% of motherboards.
CPU platform

Importance: MEDIUM

Intel
Chipset
What it is: The chipset that defines the motherboard platform and many of its features.
When it matters: When you compare platform features, connectivity, and CPU support.

Importance: HIGH

Intel H170
ASRock H170M PRO4S uses the Intel H170 chipset, which is less advanced than that of 95.7% of motherboards and equal to that of 0.6% of motherboards.
Form factor
What it is: The physical size standard of the motherboard, such as ATX or Micro-ATX.
When it matters: When you need the board to fit a specific case size.

Importance: HIGH

microATX
ASRock H170M PRO4S has the microATX form factor, which is less versatile than that of 52.2% of motherboards and equal to that of 32.4% of motherboards.
Show more
DDR memory version
What it is: The RAM generation the motherboard supports, such as DDR4 or DDR5.
When it matters: When you need the board to match a certain memory platform.

Importance: HIGH

Good value: DDR5

DDR4
ASRock H170M PRO4S uses DDR4 memory, which is newer than that of 13.6% of motherboards and equal to that of 51% of motherboards.
Memory slots
What it is: The number of RAM slots on the motherboard.
When it matters: When you want more room for future memory upgrades.

Importance: HIGH

Good value: >=4

4
ASRock H170M PRO4S has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
What it is: The largest total amount of RAM the motherboard supports.
When it matters: When you plan a build with very high memory capacity.

Importance: HIGH

Good value: >=128 GB

64 GB
ASRock H170M PRO4S supports up to 64 GB of memory, which is less than 62.6% of motherboards and equal to 24.3% of motherboards.
Memory channels
What it is: The memory channel configuration supported by the motherboard platform.
When it matters: When memory bandwidth matters for your build.

Importance: MEDIUM

2
ASRock H170M PRO4S supports 2 memory channels, which is more than 0.2% of motherboards and equal to 92.5% of motherboards.
Maximum RAM speed
What it is: The highest officially supported memory speed for the motherboard.
When it matters: When you choose RAM and want to know the supported speed ceiling.

Importance: HIGH

Good value: >=6400 MT/s

2,133 MT/s
ASRock H170M PRO4S supports memory speeds up to 2133 MT/s, which is lower than that of 86.9% of motherboards and equal to that of 4.5% of motherboards.
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N. of M.2 sockets
What it is: The number of M.2 slots available on the motherboard.
When it matters: When you want room for more NVMe or M.2 drives.

Importance: HIGH

Good value: >=3

1
ASRock H170M PRO4S has 1 M.2 sockets, which is fewer than 69.2% of motherboards and equal to 19.1% of motherboards.
M.2 slot interface per slot
What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
When it matters: When you want to check which drives each M.2 slot can use.

Importance: HIGH

1x PCIe 3.0 x4/SATA
ASRock H170M PRO4S offers 1x PCIe 3.0x4/SATA for M.2 slot interfaces, which is slower than that of 73.8% of motherboards and equal to that of 10.4% of motherboards.
N. of SATA 3 connectors
What it is: The number of SATA 6Gb/s connectors on the motherboard.
When it matters: When you plan to connect multiple SATA drives.

Importance: MEDIUM

Good value: >=6

6
ASRock H170M PRO4S has 6 SATA 3 connectors, which is more than 52.6% of motherboards and equal to 32.1% of motherboards.
Supported RAID levels
What it is: The RAID modes officially supported by the motherboard storage platform.
When it matters: When you plan to use multiple drives in a RAID setup.

Importance: MEDIUM

0/1/5/10
ASRock H170M PRO4S supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
NVMe RAID support
What it is: Shows whether the board supports RAID configurations that use NVMe SSDs.
When it matters: When you plan to use multiple NVMe drives in RAID.

Importance: LOW

yes
ASRock H170M PRO4S supports NVMe RAID. 40.3% of motherboards support this feature.
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N. of PCIe 5.0 x16 slots
What it is: The number of PCIe 5.0 x16 physical slots on the motherboard.
When it matters: When you want the newest high-bandwidth expansion slots.

Importance: HIGH

Good value: >=1

0
ASRock H170M PRO4S has 0 PCIe 5.0x16 slots, which is equal to 68.5% of motherboards.
N. of PCIe 4.0 x16 slots
What it is: The number of PCIe 4.0 x16 physical slots on the motherboard.
When it matters: When you want more room for modern expansion cards.

Importance: HIGH

Good value: >=1

0
ASRock H170M PRO4S has 0 PCIe 4.0x16 slots, which is equal to 55.6% of motherboards.
N. of PCIe 3.0 x16 slots
What it is: The number of PCIe 3.0 x16 physical slots on the motherboard.
When it matters: When you need more full-length expansion slots.

Importance: MEDIUM

2
ASRock H170M PRO4S has 2 PCIe 3.0x16 slots, which is more than 67.4% of motherboards and equal to 15.4% of motherboards.
PCIe slot electrical configuration
What it is: The actual lane wiring used by the motherboard PCIe slots.
When it matters: When you need to know how much bandwidth each slot really gets.

Importance: HIGH

x16/x4
ASRock H170M PRO4S uses x16/x4 for PCIe slot electrical configuration, which is less flexible than that of 50.5% of motherboards and equal to that of 9.6% of motherboards.
PCIe bifurcation support
What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

Importance: MEDIUM

no
ASRock H170M PRO4S does not support PCIe bifurcation. 61% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
What it is: The total number of rear USB ports available on the motherboard.
When it matters: When you use many USB devices directly from the back of the PC.

Importance: MEDIUM

Good value: >=8

6
ASRock H170M PRO4S has 6 USB ports (rear I/O), which is fewer than 64.2% of motherboards and equal to 32.9% of motherboards.
Total USB ports (including headers)
What it is: The total number of USB ports supported when rear ports and internal headers are counted together.
When it matters: When you want to know the board's full USB expansion potential.

Importance: MEDIUM

Good value: >=14

12
ASRock H170M PRO4S has 12 USB ports (including headers), which is fewer than 72.4% of motherboards and equal to 16.6% of motherboards.
Total USB-C ports (rear I/O)
What it is: The total number of rear USB-C ports on the motherboard.
When it matters: When you want more USB-C devices connected without adapters.

Importance: MEDIUM

Good value: >=1

0
ASRock H170M PRO4S has 0 USB-C ports (rear I/O), which is fewer than 64.6% of motherboards and equal to 35.4% of motherboards.
Total USB-C ports (including headers)
What it is: The total number of USB-C ports supported when rear ports and internal headers are counted together.
When it matters: When you want more USB-C connectivity across the whole build.

Importance: MEDIUM

Good value: >=2

0
ASRock H170M PRO4S has 0 USB-C ports (including headers), which is fewer than 69.6% of motherboards and equal to 30.4% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
What it is: The number of rear USB 3.2 Gen2x2 Type-C ports on the motherboard.
When it matters: When you want very fast USB-C connectivity on the rear I/O.

Importance: HIGH

Good value: >=1

0
ASRock H170M PRO4S has 0 USB 3.2 Gen2x2 ports (USB-C), which is equal to 81.6% of motherboards.
Show more
LAN speed
What it is: The maximum wired Ethernet speed supported by the motherboard.
When it matters: When you want faster wired networking.

Importance: HIGH

Good value: 2.5GbE

1 Gbps
ASRock H170M PRO4S supports LAN speeds up to 1 Gbps, which is lower than that of 50.8% of motherboards and equal to that of 49.1% of motherboards.
LAN controller
What it is: The model of onboard Ethernet controller used by the motherboard.
When it matters: When you compare networking hardware quality and features.

Importance: MEDIUM

Intel I219-V
ASRock H170M PRO4S uses the Intel I219-V LAN controller, which is more advanced than that of 41% of motherboards and equal to that of 14.2% of motherboards.
N. of RJ45 ports
What it is: The number of wired Ethernet ports on the motherboard.
When it matters: When you need one or more wired network connections.

Importance: LOW

1
ASRock H170M PRO4S has 1 RJ45 ports, which is equal to 85.6% of motherboards.
Wi-Fi connectivity
What it is: Shows whether the motherboard includes onboard Wi-Fi hardware instead of requiring a separate adapter.
When it matters: When you want wireless networking without adding an extra card.

Importance: MEDIUM

no
ASRock H170M PRO4S does not support Wi-Fi connectivity. 49.1% of motherboards support this feature.
Wi-Fi version
What it is: The supported Wi-Fi generation, such as Wi-Fi 6 or Wi-Fi 7.
When it matters: When you care about wireless speed and router compatibility.

Importance: MEDIUM

Good value: Wi-Fi 6E (802.11ax)

N/A
Show more
Audio codec
What it is: The onboard audio codec used by the motherboard.
When it matters: When sound quality from the built-in audio matters to you.

Importance: MEDIUM

Realtek ALC892
ASRock H170M PRO4S uses the Realtek ALC892 audio codec, which is less advanced than that of 80.1% of motherboards and equal to that of 8.5% of motherboards.
Audio channels
What it is: The audio channel configuration supported by the onboard sound solution.
When it matters: When you want surround sound from the motherboard audio outputs.

Importance: LOW

Good value: 7.1

7.1
ASRock H170M PRO4S offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
full 7.1 needs front panel audio.
Audio SNR
What it is: The signal-to-noise ratio of the onboard audio solution.
When it matters: When you care about cleaner onboard audio output.

Importance: MEDIUM

Good value: >=120 dB

95 dB
ASRock H170M PRO4S has an audio SNR of 95 dB, which is lower than that of 84.2% of motherboards and equal to that of 10.1% of motherboards.
Headphone amp support
What it is: Shows whether the onboard audio path includes dedicated headphone amplification for harder-to-drive headsets.
When it matters: When you use harder-to-drive headphones from the onboard audio.

Importance: LOW

no
ASRock H170M PRO4S does not support a headphone amp. 63% of motherboards support this feature.
N. of 3.5mm audio jacks
What it is: The number of rear 3.5mm audio jacks on the motherboard.
When it matters: When you want more analog audio connection options.

Importance: LOW

Good value: >=5

3
ASRock H170M PRO4S has 3 3.5mm audio jacks, which is fewer than 50.3% of motherboards and equal to 38.2% of motherboards.
Show more
VRM phases
What it is: The number of power-delivery phases used by the motherboard VRM.
When it matters: When you care about CPU power delivery and overclocking headroom.

Importance: HIGH

Good value: >=12

6
ASRock H170M PRO4S has 6 VRM phases, which is fewer than 85.5% of motherboards and equal to 1.9% of motherboards.
N. of CPU power connectors
What it is: The number of CPU power connectors on the motherboard.
When it matters: When you care about power delivery for higher-end CPUs.

Importance: HIGH

Good value: >=2

1
ASRock H170M PRO4S has 1 CPU power connectors, which is equal to 54.5% of motherboards.
N. of fan headers
What it is: The number of headers available for case or CPU fans.
When it matters: When your build uses several fans.

Importance: MEDIUM

Good value: >=6

3
ASRock H170M PRO4S has 3 fan headers, which is fewer than 76.7% of motherboards and equal to 15% of motherboards.
Pump header
What it is: Shows whether the motherboard includes a dedicated header designed for a liquid-cooling pump.
When it matters: When you build with an AIO or custom liquid cooling loop.

Importance: MEDIUM

no
ASRock H170M PRO4S does not have a pump header. 77% of motherboards include this feature.
Pump header max current
What it is: The maximum current the dedicated pump header can supply.
When it matters: When you want to make sure the pump header can power your cooling setup.

Importance: LOW

Good value: >=2 A

0 A
ASRock H170M PRO4S supports up to 0 A on the pump header, which is lower than that of 74.3% of motherboards and equal to that of 25.7% of motherboards.
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ASRock H170M PRO4S vs the average motherboard

  • More BIOS update options
    ASRock H170M PRO4S has more BIOS update options than the average motherboard (UEFI utility, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
    What it is: The available ways to update the motherboard BIOS.
    When it matters: When you want easier BIOS maintenance and recovery.

    Importance: LOW

    ASRock H170M PRO4S has more BIOS update options than the average motherboard (UEFI utility, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.UEFI utility, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app
  • 2 more USB 3.2 Gen1 ports
    ASRock H170M PRO4S has more USB 3.2 Gen1 ports than the average motherboard (6 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
    What it is: The number of rear USB 3.2 Gen1 Type-A ports on the motherboard.
    When it matters: When you want more standard USB ports with faster transfer speeds.

    Importance: MEDIUM

    Good value: >=4

    ASRock H170M PRO4S has more USB 3.2 Gen1 ports than the average motherboard (6 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.6 vs 4
  • Broader Windows support
    ASRock H170M PRO4S has broader Windows support than the average motherboard (Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
    What it is: The Windows versions officially supported by the motherboard.
    When it matters: When you want to know whether your planned Windows version is supported.

    Importance: MEDIUM

    ASRock H170M PRO4S has broader Windows support than the average motherboard (Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10
  • 1 more DVI outputs
    ASRock H170M PRO4S has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.
    What it is: The number of DVI video outputs on the motherboard.
    When it matters: When you plan to use older compatible monitors.

    Importance: LOW

    ASRock H170M PRO4S has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.1 vs 0
  • 2 more SATA 3 connectors
    ASRock H170M PRO4S has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
    What it is: The number of SATA 6Gb/s connectors on the motherboard.
    When it matters: When you plan to connect multiple SATA drives.

    Importance: MEDIUM

    Good value: >=6

    ASRock H170M PRO4S has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.6 vs 4
  • 1 more PCIe x1 slots
    ASRock H170M PRO4S has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
    What it is: The number of PCIe x1 slots on the motherboard.
    When it matters: When you want space for smaller add-in cards.

    Importance: MEDIUM

    Good value: >=2

    ASRock H170M PRO4S has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.2 vs 1
  • 77.8% cheaper
    ASRock H170M PRO4S is cheaper than the average motherboard (£90 vs £160).
    ASRock H170M PRO4S is cheaper than the average motherboard (£90 vs £160).£90 vs £160
  • 61 mm shorter
    ASRock H170M PRO4S is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
    What it is: The physical height of the motherboard.
    When it matters: When you check case fit or compare board size.

    Importance: LOW

    ASRock H170M PRO4S is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.244 mm vs 305 mm
  • More BIOS update options
    ASRock H170M PRO4S has more BIOS update options than the average motherboard (UEFI utility, Windows app, DOS, internet flash vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
  • Broader Windows support
    ASRock H170M PRO4S has broader Windows support than the average motherboard (Windows 11, Windows 10, Windows 8.1, Windows 8, Windows 7 vs Windows 11, Windows 10). The average motherboard supports Windows 11, Windows 10.
  • 2 more SATA 3 connectors
    ASRock H170M PRO4S has more SATA 3 connectors than the average motherboard (6 vs 4). The average motherboard has 4 SATA 3 connectors.
  • 1 more PCIe x1 slots
    ASRock H170M PRO4S has more PCIe x1 slots than the average motherboard (2 vs 1). The average motherboard has 1 PCIe x1 slot/s.
  • More flexible PCIe lane configuration
    ASRock H170M PRO4S has more flexible PCIe lane configuration than the average motherboard (x16/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 2 more USB 3.2 Gen1 ports
    ASRock H170M PRO4S has more USB 3.2 Gen1 ports than the average motherboard (6 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 1 more DVI outputs
    ASRock H170M PRO4S has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.
  • 61 mm shorter
    ASRock H170M PRO4S is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.

Total
Overall
Platform & Features
Storage
Expansion
Ports & USB
Power & Cooling
  • More basic motherboard chipset
    ASRock H170M PRO4S has more basic motherboard chipset than the average motherboard (Intel H170 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • No BIOS flashback support
    ASRock H170M PRO4S does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • Not suitable for gaming
    ASRock H170M PRO4S is not suitable for gaming, while the average motherboard is. 86.3% of motherboards are suitable for gaming.
    business/productivity-focused
  • Not ready for Windows 11
    ASRock H170M PRO4S is not ready for Windows 11, while the average motherboard is. 77.1% of motherboards are ready for Windows 11.
  • No debug LED indicators
    ASRock H170M PRO4S does not have debug LED indicators, while the average motherboard does. 78.8% of motherboards include debug LED indicators.
  • Less versatile form factor
    ASRock H170M PRO4S has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
  • 6 years older release date
    ASRock H170M PRO4S is older than the average motherboard (2,015 vs 2,021). The average motherboard was released in 2,021.
    June 2015
  • 50% less maximum memory capacity
    ASRock H170M PRO4S has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.
  • 53.6% lower maximum RAM speed
    ASRock H170M PRO4S has a lower maximum RAM speed than the average motherboard (2,133 MT/s vs 4,600 MT/s). The average motherboard supports RAM speed of 4,600 MT/s.
  • 56.8% lower overclocked RAM speed
    ASRock H170M PRO4S has a lower overclocked RAM speed than the average motherboard (2,133 MT/s vs 4,933 MT/s). The average motherboard supports overclocked RAM speed of 4,933 MT/s.
  • Slower M.2 slot interfaces
    ASRock H170M PRO4S has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
  • 1 fewer M.2 sockets
    ASRock H170M PRO4S has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
  • No PCIe bifurcation support
    ASRock H170M PRO4S does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • 2 fewer rear USB ports
    ASRock H170M PRO4S has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
  • 1 fewer rear USB-C ports
    ASRock H170M PRO4S has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 3 fewer total USB connections
    ASRock H170M PRO4S has fewer total USB connections than the average motherboard (12 vs 15). The average motherboard has 15 total USB connections.
  • 1 fewer USB 3.2 Gen2 ports
    ASRock H170M PRO4S has fewer USB 3.2 Gen2 ports than the average motherboard (0 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 1 fewer DisplayPort outputs
    ASRock H170M PRO4S has fewer DisplayPort outputs than the average motherboard (0 vs 1). The average motherboard has 1 DisplayPort outputs.
  • 1 fewer USB 2.0 headers
    ASRock H170M PRO4S has fewer USB 2.0 headers than the average motherboard (1 vs 2). The average motherboard has 2 USB 2.0 header/s.
  • Older HDMI version
    ASRock H170M PRO4S has older HDMI version than the average motherboard (1.4 vs 2.1). The average motherboard supports HDMI 2.1.
  • 1 fewer total USB-C connections
    ASRock H170M PRO4S has fewer total USB-C connections than the average motherboard (0 vs 1). The average motherboard has 1 total USB-C connections.
  • 2 fewer USB 2.0 ports
    ASRock H170M PRO4S has fewer USB 2.0 ports than the average motherboard (0 vs 2). The average motherboard has 2 USB 2.0 port/s.
  • 60% lower LAN speed
    ASRock H170M PRO4S has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
  • No Wi-Fi antenna included
    ASRock H170M PRO4S does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • 20 dB lower audio SNR
    ASRock H170M PRO4S has a lower audio SNR than the average motherboard (95 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • More basic audio codec
    ASRock H170M PRO4S has more basic audio codec than the average motherboard (Realtek ALC892 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • No headphone amp support
    ASRock H170M PRO4S does not support a headphone amp, while the average motherboard does. 63% of motherboards support a headphone amp.
  • 2 fewer 3.5mm audio jacks
    ASRock H170M PRO4S has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
  • No optical S/PDIF out
    ASRock H170M PRO4S does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • Fewer VRM phases
    ASRock H170M PRO4S has fewer VRM phases than the average motherboard (6 vs 10). The average motherboard has 10 VRM phase/s.
  • 2 fewer ARGB headers
    ASRock H170M PRO4S has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
  • No pump header
    ASRock H170M PRO4S does not have a pump header, while the average motherboard does. 77% of motherboards include a pump header.
  • 2 fewer fan headers
    ASRock H170M PRO4S has fewer fan headers than the average motherboard (3 vs 5). The average motherboard has 5 fan header/s.
  • No onboard RGB lighting
    ASRock H170M PRO4S does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 fewer RGB headers
    ASRock H170M PRO4S has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
  • 2 A lower pump header current limit
    ASRock H170M PRO4S has a lower pump header current than the average motherboard (0 A vs 2 A). The average motherboard provides pump header current of 2 A.
  • More basic motherboard chipset
    ASRock H170M PRO4S has more basic motherboard chipset than the average motherboard (Intel H170 vs Intel B860). The average motherboard uses Intel B860 chipset.
    What it is: The chipset that defines the motherboard platform and many of its features.
    When it matters: When you compare platform features, connectivity, and CPU support.

    Importance: HIGH

    ASRock H170M PRO4S has more basic motherboard chipset than the average motherboard (Intel H170 vs Intel B860). The average motherboard uses Intel B860 chipset.Intel H170 vs Intel B860
  • 60% lower LAN speed
    ASRock H170M PRO4S has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.
    What it is: The maximum wired Ethernet speed supported by the motherboard.
    When it matters: When you want faster wired networking.

    Importance: HIGH

    Good value: 2.5GbE

    ASRock H170M PRO4S has a lower LAN speed than the average motherboard (1 Gbps vs 2.5 Gbps). The average motherboard offers LAN speed of 2.5 Gbps.1 Gbps vs 2.5 Gbps
  • Slower M.2 slot interfaces
    ASRock H170M PRO4S has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    What it is: The storage or PCIe interface available for each M.2 slot on the motherboard.
    When it matters: When you want to check which drives each M.2 slot can use.

    Importance: HIGH

    ASRock H170M PRO4S has slower M.2 slot interfaces than the average motherboard (1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 2 fewer rear USB ports
    ASRock H170M PRO4S has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    What it is: The total number of rear USB ports available on the motherboard.
    When it matters: When you use many USB devices directly from the back of the PC.

    Importance: MEDIUM

    Good value: >=8

    ASRock H170M PRO4S has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.6 vs 8
  • 50% less maximum memory capacity
    ASRock H170M PRO4S has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.
    What it is: The largest total amount of RAM the motherboard supports.
    When it matters: When you plan a build with very high memory capacity.

    Importance: HIGH

    Good value: >=128 GB

    ASRock H170M PRO4S has fewer maximum memory capacity than the average motherboard (64 GB vs 128 GB). The average motherboard supports 128 GB of memory.64 GB vs 128 GB
  • 1 fewer M.2 sockets
    ASRock H170M PRO4S has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.
    What it is: The number of M.2 slots available on the motherboard.
    When it matters: When you want room for more NVMe or M.2 drives.

    Importance: HIGH

    Good value: >=3

    ASRock H170M PRO4S has fewer M.2 sockets than the average motherboard (1 vs 2). The average motherboard has 2 M.2 socket/s.1 vs 2
  • No BIOS flashback support
    ASRock H170M PRO4S does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
    What it is: Shows whether the motherboard can update BIOS without needing a fully installed or supported CPU to boot first.
    When it matters: When you may need to update BIOS before the system can boot.

    Importance: MEDIUM

    ASRock H170M PRO4S does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • No PCIe bifurcation support
    ASRock H170M PRO4S does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
    What it is: Shows whether the board can split PCIe lanes across multiple devices from one slot or link.
    When it matters: When you plan multi-SSD adapters or more advanced expansion setups.

    Importance: MEDIUM

    ASRock H170M PRO4S does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
Total
Overall
Platform & Features
Memory
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

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Third-party reviews

United Kingdom
amazon
3.9
39 Reviews
United States
Amazon_logo.png
3.9
39 Reviews

(Reviews last updated: May 2026)

What customers like about ASRock H170M PRO4S?

  • Excellent value for money with high feature-to-price ratio
  • Includes a bootable Ultra M.2 slot supporting PCIe Gen3 x4
  • Supports up to 64GB of DDR4 memory across four DIMM slots
  • Features a user-friendly UEFI BIOS interface with built-in update tools
  • Provides Intel Gigabit LAN for reliable and efficient networking
  • Offers 7.1 channel HD audio support using the Realtek ALC892 codec

What customers dislike about ASRock H170M PRO4S?

  • Limited to only one internal USB 2.0 header, which can restrict case port or accessory connectivity
  • The 'S' version lacks the rear analog audio jacks found on the standard Pro4, requiring front panel use for 7.1 audio
  • Reduced aesthetic appeal and cooling due to smaller VRM heatsinks and lack of I/O 'armor' compared to the non-S model
  • Does not support CPU overclocking, making it less suitable for performance enthusiasts
  • Only includes two chassis fan headers, which may be insufficient for complex cooling setups
  • Missing legacy VGA output, providing only DVI-D and HDMI video connections

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