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MSI Pro B660M A Review | 107 Data compared

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  • Avg. price in UK: ~£130
  • Avg. price in US: ~$140
  • CPU socket: LGA 1700
  • Chipset: Intel B660
  • Form factor: microATX

MSI Pro B660M A review. Compare 107 technical specifications and user reviews to see how it ranks among motherboards and if it is worth buying.

6.3

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%

6.3

Technical Score

10.0%

5.7

User score

Good
6.3

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%

6.9

Memory

16.0%

7.2

Platform & Features

16.0%

5.8

Storage

15.0%

8.8

Network

13.0%

3.0

Ports & USB

8.0%

3.7

Expansion

8.0%

7.3

Power & Cooling

5.0%

6.6

Audio

Good
5.7

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%

7.2

User reviews

30.0%

2.1

Popularity

User score:
United Kingdom
amazon
3.6
(11)
United States
Amazon_logo.png
3.7
(11)

(Reviews last updated: May 2026)

Good
  • 5.7
    Gaming

    Score components:

    28.0%

    5.9

    VRM phases

    22.0%

    5.5

    N. of M.2 sockets

    18.0%

    10

    LAN speed

    17.0%

    5.5

    Maximum RAM speed

    15.0%

    1.0

    N. of PCIe 5.0 x16 slots

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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 MSI Pro B660M-A is a performance-focused Micro-ATX motherboard designed for Intel 12th, 13th, and 14th Gen processors on the LGA 1700 socket, featuring a robust 12-phase VRM with heavy-duty heatsinks that reliably handles high-end CPUs like the i7-12700K. Key specifications include four DDR4 slots supporting up to 128GB at 4800+MHz (OC), dual PCIe 4.0 x4 M.2 slots for high-speed NVMe storage (with one Shield Frozr heatsink), a primary PCIe 4.0 x16 slot for modern GPUs, and a fast 2.5Gbps LAN controller. Its main pros are exceptional power delivery for its price point and comprehensive video outputs (dual HDMI 2.1 and dual DisplayPort 1.4). However, notable cons include the lack of a rear USB-C port, no integrated I/O shield, and a budget-tier Realtek ALC897 audio codec.

Technical Specifications of MSI Pro B660M A

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%

6.9

Memory

16.0%

7.2

Platform & Features

16.0%

5.8

Storage

15.0%

8.8

Network

13.0%

3.0

Ports & USB

8.0%

3.7

Expansion

8.0%

7.3

Power & Cooling

5.0%

6.6

Audio

6.3
MSI Pro B660M A has a technical score of 6.32 points, which is lower than that of 50.2% 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%

7.2

User reviews

30.0%

2.1

Popularity

User score:
United Kingdom
amazon
3.6
(11)
United States
Amazon_logo.png
3.7
(11)

(Reviews last updated: May 2026)

5.7
MSI Pro B660M A has a user score of 5.67 points, which is lower than that of 96.7% 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.
2.1
MSI Pro B660M A has a popularity of 2.1 points, which is lower than 68.7% 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%

6.3

Overall score

40.0%

9.8

Price

7.3
MSI Pro B660M A has a quality-to-price ratio of 7.3 points, which is higher than 46.1% 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

MSI
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 1700
MSI Pro B660M A uses the LGA 1700 CPU socket, which is more advanced than that of 55% of motherboards and equal to that of 22.7% 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 B660
MSI Pro B660M A uses the Intel B660 chipset, which is more advanced than that of 57.6% of motherboards and equal to that of 2.8% 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
MSI Pro B660M A 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.
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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
MSI Pro B660M A 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
MSI Pro B660M A 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

128 GB
MSI Pro B660M A supports up to 128 GB of memory, which is more than 40.4% of motherboards and equal to 32.1% 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
MSI Pro B660M A 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

4,800 MT/s
MSI Pro B660M A supports memory speeds up to 4800 MT/s, which is higher than that of 51.5% of motherboards and equal to that of 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

2
MSI Pro B660M A has 2 M.2 sockets, which is more than 30.8% of motherboards and equal to 34.6% 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 4.0 x4, 1x PCIe 4.0 x4/SATA
MSI Pro B660M A offers 1x PCIe 4.0x4, 1x PCIe 4.0x4/SATA for M.2 slot interfaces, which is faster than that of 50.4% of motherboards and equal to that of 3.2% 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

4
MSI Pro B660M A has 4 SATA 3 connectors, which is more than 5.6% of motherboards and equal to 46.3% 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
MSI Pro B660M A supports RAID levels 0/1/5/10, which is broader than 31.8% of motherboards and equal to 68.2% of motherboards.
SATA only
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

no
MSI Pro B660M A does not support NVMe RAID. 59.8% 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
MSI Pro B660M A 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

1
MSI Pro B660M A has 1 PCIe 4.0x16 slots, which is more than 55.6% of motherboards and equal to 35.3% 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

1
MSI Pro B660M A has 1 PCIe 3.0x16 slots, which is more than 40.6% of motherboards and equal to 26.7% of motherboards.
runs at x4 mode
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

x0/x4
MSI Pro B660M A uses x0/x4 for PCIe slot electrical configuration, which is less flexible than that of 99.2% of motherboards and equal to that of 0.1% 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
MSI Pro B660M A 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
MSI Pro B660M A 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

13
MSI Pro B660M A has 13 USB ports (including headers), which is fewer than 64.7% of motherboards and equal to 7.6% 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
MSI Pro B660M A 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

1
MSI Pro B660M A has 1 USB-C ports (including headers), which is more than 30.5% of motherboards and equal to 21.3% 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
MSI Pro B660M A 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

2.5 Gbps
MSI Pro B660M A supports LAN speeds up to 2.5 Gbps, which is higher than that of 49.2% of motherboards and equal to that of 41.5% 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

Realtek RTL8125B
MSI Pro B660M A uses the Realtek RTL8125B LAN controller, which is more advanced than that of 58.2% of motherboards and equal to that of 17.3% 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
MSI Pro B660M A 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

yes
MSI Pro B660M A supports Wi-Fi connectivity. 50.9% 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)

Wi-Fi 6 (802.11ax)
MSI Pro B660M A supports Wi-Fi 6 (802.11ax), which is newer than that of 60.4% of motherboards and equal to that of 11.6% of motherboards.
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 ALC897
MSI Pro B660M A uses the Realtek ALC897 audio codec, which is less advanced than that of 50.8% of motherboards and equal to that of 29.3% 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
MSI Pro B660M A offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
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

97 dB
MSI Pro B660M A has an audio SNR of 97 dB, which is lower than that of 67.3% of motherboards and equal to that of 16.8% 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

?
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
MSI Pro B660M A 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

8+1+1
MSI Pro B660M A has 8+1+1 VRM phases, which is fewer than 57.8% of motherboards and equal to 1.3% 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

2
MSI Pro B660M A has 2 CPU power connectors, which is more than 54.6% of motherboards and equal to 45.3% 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

4
MSI Pro B660M A has 4 fan headers, which is fewer than 64.3% of motherboards and equal to 12.3% 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

yes
MSI Pro B660M A has a pump header. 23.1% 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

3 A
MSI Pro B660M A supports up to 3 A on the pump header, which is higher than that of 76.7% of motherboards and equal to that of 23.2% of motherboards.
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MSI Pro B660M A vs the average motherboard

  • Newer CPU socket
    MSI Pro B660M A has newer CPU socket than the average motherboard (LGA 1,700 vs LGA 1,151). The average motherboard uses LGA 1,151 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

    MSI Pro B660M A has newer CPU socket than the average motherboard (LGA 1,700 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.LGA 1700 vs LGA 1151
  • 1 more CPU power connectors
    MSI Pro B660M A has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 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

    MSI Pro B660M A has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.2 vs 1
  • 1 more PCIe 4.0x16 slots
    MSI Pro B660M A has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
    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

    MSI Pro B660M A has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.1 vs 0
  • Supports Wi-Fi
    MSI Pro B660M A supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support 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

    MSI Pro B660M A supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • 1 more USB 3.2 Gen2 ports
    MSI Pro B660M A has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
    What it is: The number of rear USB 3.2 Gen2 Type-A ports on the motherboard.
    When it matters: When you want faster USB-A ports for storage or accessories.

    Importance: MEDIUM

    Good value: >=2

    MSI Pro B660M A has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.2 vs 1
  • 1 more USB4 or Thunderbolt headers
    MSI Pro B660M A has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
    What it is: The number of internal USB4 or Thunderbolt headers on the motherboard.
    When it matters: When you plan to add high-speed front USB-C or Thunderbolt connections.

    Importance: MEDIUM

    MSI Pro B660M A has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.1 vs 0
  • 61 mm shorter
    MSI Pro B660M A 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

    MSI Pro B660M A is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.244 mm vs 305 mm
  • 1 more HDMI outputs
    MSI Pro B660M A has more HDMI outputs than the average motherboard (2 vs 1). The average motherboard has 1 HDMI outputs.
    What it is: The number of HDMI outputs on the motherboard.
    When it matters: When you plan to use integrated graphics with one or more HDMI displays.

    Importance: MEDIUM

    MSI Pro B660M A has more HDMI outputs than the average motherboard (2 vs 1). The average motherboard has 1 HDMI outputs.2 vs 1
  • Newer CPU socket
    MSI Pro B660M A has newer CPU socket than the average motherboard (LGA 1,700 vs LGA 1,151). The average motherboard uses LGA 1,151 CPU socket.
  • 1 more PCIe 4.0x16 slots
    MSI Pro B660M A has more PCIe 4.0x16 slots than the average motherboard (1 vs 0). The average motherboard has 0 PCIe 4.0x16 slot/s.
  • 1 more USB 3.2 Gen2 ports
    MSI Pro B660M A has more USB 3.2 Gen2 ports than the average motherboard (2 vs 1). The average motherboard has 1 USB 3.2 Gen2 port/s.
  • 1 more USB4 or Thunderbolt headers
    MSI Pro B660M A has more USB4 or Thunderbolt headers than the average motherboard (1 vs 0). The average motherboard has 0 USB4 or Thunderbolt header/s.
  • 1 more HDMI outputs
    MSI Pro B660M A has more HDMI outputs than the average motherboard (2 vs 1). The average motherboard has 1 HDMI outputs.
  • 1 more DisplayPort outputs
    MSI Pro B660M A has more DisplayPort outputs than the average motherboard (2 vs 1). The average motherboard has 1 DisplayPort outputs.
  • Supports Wi-Fi
    MSI Pro B660M A supports Wi-Fi connectivity, while the average motherboard does not. 49.1% of motherboards support Wi-Fi connectivity.
  • 1 more CPU power connectors
    MSI Pro B660M A has more CPU power connectors than the average motherboard (2 vs 1). The average motherboard has 1 CPU power connectors.
  • 61 mm shorter
    MSI Pro B660M A is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
  • 1 A higher pump header current limit
    MSI Pro B660M A has a higher pump header current than the average motherboard (3 A vs 2 A). The average motherboard provides pump header current of 2 A.

Total
Platform & Features
Expansion
Ports & USB
Network
Power & Cooling
  • More basic motherboard chipset
    MSI Pro B660M A has more basic motherboard chipset than the average motherboard (Intel B660 vs Intel B860). The average motherboard uses Intel B860 chipset.
  • No BIOS flashback support
    MSI Pro B660M A does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • Fewer BIOS update options
    MSI Pro B660M A has fewer BIOS update options than the average motherboard (UEFI utility, Windows app vs UEFI utility, flashback, Windows app). The average motherboard offers UEFI utility, flashback, Windows app BIOS update methods.
  • No automatic overclocking
    MSI Pro B660M A does not support automatic overclocking, while the average motherboard does. 74% of motherboards support automatic overclocking.
    memory auto-OC only
  • Less versatile form factor
    MSI Pro B660M A has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
  • No NVMe RAID support
    MSI Pro B660M A does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • Slower M.2 slot interfaces
    MSI Pro B660M A has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 4.0x4/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.
  • No PCIe bifurcation support
    MSI Pro B660M A does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • Less flexible PCIe lane configuration
    MSI Pro B660M A has less flexible PCIe lane configuration than the average motherboard (x0/x4 vs x16/x1). The average motherboard uses x16/x1 PCIe slot lane configuration.
  • 2 fewer rear USB ports
    MSI Pro B660M A 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
    MSI Pro B660M A has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
  • 2 fewer USB 3.2 Gen1 ports
    MSI Pro B660M A has fewer USB 3.2 Gen1 ports than the average motherboard (2 vs 4). The average motherboard has 4 USB 3.2 Gen1 port/s.
  • 2 fewer total USB connections
    MSI Pro B660M A has fewer total USB connections than the average motherboard (13 vs 15). The average motherboard has 15 total USB connections.
  • More basic LAN controller
    MSI Pro B660M A has more basic LAN controller than the average motherboard (Realtek RTL8,125B vs Marvell AQtion AQC113C). The average motherboard uses Marvell AQtion AQC113C LAN controller.
  • 18 dB lower audio SNR
    MSI Pro B660M A has a lower audio SNR than the average motherboard (97 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
  • More basic audio codec
    MSI Pro B660M A has more basic audio codec than the average motherboard (Realtek ALC897 vs Realtek ALC898). The average motherboard uses Realtek ALC898 audio codec.
  • 2 fewer 3.5mm audio jacks
    MSI Pro B660M A 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
    MSI Pro B660M A does not have optical S/PDIF out, while the average motherboard does. 55.7% of motherboards include optical S/PDIF out.
  • No onboard RGB lighting
    MSI Pro B660M A does not have onboard RGB lighting, while the average motherboard does. 50.3% of motherboards include onboard RGB lighting.
  • 1 fewer fan headers
    MSI Pro B660M A has fewer fan headers than the average motherboard (4 vs 5). The average motherboard has 5 fan header/s.
  • More basic motherboard chipset
    MSI Pro B660M A has more basic motherboard chipset than the average motherboard (Intel B660 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

    MSI Pro B660M A has more basic motherboard chipset than the average motherboard (Intel B660 vs Intel B860). The average motherboard uses Intel B860 chipset.Intel B660 vs Intel B860
  • No NVMe RAID support
    MSI Pro B660M A does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
    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

    MSI Pro B660M A does not support NVMe RAID, while the average motherboard does. 59.8% of motherboards support NVMe RAID.
  • 2 fewer rear USB ports
    MSI Pro B660M A 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

    MSI Pro B660M A has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.6 vs 8
  • Slower M.2 slot interfaces
    MSI Pro B660M A has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 4.0x4/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

    MSI Pro B660M A has slower M.2 slot interfaces than the average motherboard (1x PCIe 4.0x4, 1x PCIe 4.0x4/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 4.0x4, 1x PCIe 4.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • More basic LAN controller
    MSI Pro B660M A has more basic LAN controller than the average motherboard (Realtek RTL8,125B vs Marvell AQtion AQC113C). The average motherboard uses Marvell AQtion AQC113C 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

    MSI Pro B660M A has more basic LAN controller than the average motherboard (Realtek RTL8,125B vs Marvell AQtion AQC113C). The average motherboard uses Marvell AQtion AQC113C LAN controller.Realtek RTL8125B vs Marvell AQtion AQC113C
  • No BIOS flashback support
    MSI Pro B660M A 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

    MSI Pro B660M A does not support BIOS flashback, while the average motherboard does. 50.8% of motherboards support BIOS flashback.
  • No PCIe bifurcation support
    MSI Pro B660M A 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

    MSI Pro B660M A does not support PCIe bifurcation, while the average motherboard does. 61% of motherboards support PCIe bifurcation.
  • 1 fewer rear USB-C ports
    MSI Pro B660M A has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.
    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

    MSI Pro B660M A has fewer rear USB-C ports than the average motherboard (0 vs 1). The average motherboard has 1 rear USB-C port/s.0 vs 1
Total
Overall
Platform & Features
Storage
Expansion
Ports & USB
Network
Audio
Power & Cooling

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Third-party reviews

United Kingdom
amazon
3.6
11 Reviews
United States
Amazon_logo.png
3.7
11 Reviews

(Reviews last updated: May 2026)

What customers like about MSI Pro B660M A?

  • Excellent VRM performance that can handle high-end CPUs like the i9-12900K
  • Strong value-to-performance ratio for a budget B660 board
  • Generous display outputs with 2x HDMI 2.1 and 2x DisplayPort 1.4
  • Includes a heatsink for the primary M.2 slot (M.2 Shield Frozr)
  • Features 2.5G LAN for faster networking compared to standard Gigabit
  • User-friendly BIOS with easy XMP profile enabling for memory performance
  • Includes four debug LEDs for easier troubleshooting

What customers dislike about MSI Pro B660M A?

  • Lacks a USB Type-C port on the rear I/O panel
  • Uses a dated entry-level audio codec (Realtek ALC897)
  • No integrated I/O shield, requiring manual installation
  • Limited number of SATA ports (only 4 available)
  • Aesthetics are plain with no built-in RGB lighting
  • Stock BIOS settings can lead to high CPU voltages and thermal throttling in heavy multi-threaded loads
  • Reports of slow or difficult after-sales service in certain regions

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