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BIOSTAR B550MX E Pro Review | 107 Data compared

Avg. price in UK:~£110Avg. price in US:~$130CPU socket:AM4Chipset:AMD B550Form factor:microATX

BIOSTAR B550MX E Pro Review: Compare 107 technical specifications and user reviews to see how this product ranks in the Motherboards category and whether it is worth buying.

5.5

Overall score

Score
5.5/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 72% of models
Score components

90%

5.5

Technical Score

10%

6.0

User score

â–¼Worse than 72% of motherboards
5.5

Technical Score

Technical score
5.5/ 10
✕
What it is
An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.
When it matters
When you want to compare motherboards based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 70% of models
Score components

19%

7.1

Memory

16%

7.6

Platform & Features

16%

6.4

Storage

15%

3.3

Network

13%

2.0

Ports & USB

8%

5.2

Expansion

8%

5.2

Power & Cooling

5%

6.1

Audio

â–¼Worse than 70% of motherboards
6.0

User score

User score
6.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 98% of models
Score components

70%

7.0

User reviews

30%

3.5

Popularity

User score:
United Kingdom
amazon
3.5
(6)
United States
Amazon_logo.png
3.5
(6)

(Reviews last updated: May 2026)

â–¼Worse than 98% of motherboards
  • biostar-b550mx-e-pro
  • biostar-b550mx-e-pro
  • biostar-b550mx-e-pro
  • biostar-b550mx-e-pro
biostar-b550mx-e-pro
biostar-b550mx-e-pro
biostar-b550mx-e-pro
biostar-b550mx-e-pro

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Verdict

The Biostar B550MX/E PRO is a Micro ATX motherboard featuring the AMD B550 chipset and an AM4 socket, supporting AMD Ryzen 3000 and 5000 series processors. It offers robust memory support with four DIMM slots for up to 128GB of DDR4 RAM, reaching overclocked speeds of 4933+ MHz. Notable pros include its high-speed storage capabilities with a PCIe 4.0 M.2 slot (64Gb/s), a primary PCIe 4.0 x16 expansion slot, and a dedicated M.2 (E Key) slot for Wi-Fi 6 modules. It also features practical DIY tools like a Debug LED for troubleshooting and an HDMI 2.1 port supporting 4K resolution. However, cons include its budget VRM design, which may limit performance with higher-core processors, a lack of built-in Wi-Fi/Bluetooth cards, and the absence of high-speed USB-C ports on the rear I/O.

Technical Specifications of motherboard BIOSTAR B550MX E Pro

Technical Score
Technical score
5.5/ 10
✕
What it is
An assessment of technical performance for products in the Motherboards category across these key areas: Platform & Features, Memory, Storage, Expansion, Ports & USB, Network, Audio, Power & Cooling.
When it matters
When you want to compare motherboards based on technical performance and available features.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 70% of models
Score components:

19%

7.1

Memory

16%

7.6

Platform & Features

16%

6.4

Storage

15%

3.3

Network

13%

2.0

Ports & USB

8%

5.2

Expansion

8%

5.2

Power & Cooling

5%

6.1

Audio

5.5
BIOSTAR B550MX E Pro has a technical score of 5.5 points, which is lower than that of 69.6% of products in this category.
User score
User score
6.0/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 98% of models
Score components

70%

7.0

User reviews

30%

3.5

Popularity

User score:
United Kingdom
amazon
3.5
(6)
United States
Amazon_logo.png
3.5
(6)

(Reviews last updated: May 2026)

6.0
BIOSTAR B550MX E Pro has a user score of 5.95 points, which is lower than that of 97.8% of products in this category.
Popularity
Popularity
3.5/ 10
✕
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.
Score distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 74% of models
Popularity:
BIOSTAR B550MX E Pro has a popularity score of 3.5 points, which is lower than that of 72.7% of products in this category.
3.5
BIOSTAR B550MX E Pro has a popularity score of 3.5 points, which is lower than that of 72.7% of products in this category.
Ratio quality/price
Value for money
6.9/ 10
✕
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 distribution
â–¼
<55-66-77-88-99-10
â–¼ Worse than 71% of models
Score components:

60%

5.5

Overall score

40%

9.9

Price

6.9
BIOSTAR B550MX E Pro has a value-for-money score of 6.9 points, which is lower than that of 67.3% of products in this category.
Brand name
Biostar
CPU socket
AM4
CPU socket
AM4
â–¼ Worse than 48% of models
This motherboard uses the AM4 CPU socket, which is more advanced than that of 38.5% of motherboards and equal to that of 13.3% of motherboards.
CPU platform
AMD
CPU platform
AMD
â–¼ Worse than 68% of models
This motherboard is built for the AMD CPU platform, which is less common than that of 68.5% of motherboards and equal to that of 31.5% of motherboards.
Chipset
AMD B550
Chipset
AMD B550
â–² Better than 51% of models
This motherboard uses the AMD B550 chipset, which is more advanced than that of 50.6% of motherboards and equal to that of 4.4% of motherboards.
Form factor
microATX
Form factor
microATX
â–¼ Worse than 52% of models
This motherboard 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
DDR4
DDR memory version
DDR4
â–¼ Worse than 36% of models
This motherboard uses DDR4 memory, which is newer than that of 13.5% of motherboards and equal to that of 50.8% of motherboards.
Memory slots
4
Memory slots
4
â–² Better than 21% of models
Market range: <2 – >4
This motherboard has 4 Memory slots, which is more than 21.5% of motherboards and equal to 72.5% of motherboards.
Maximum memory capacity
128 GB
Maximum memory capacity
128 GB
â–² Better than 40% of models
Market range: <32 GB – >256 GB
This motherboard supports up to 128 GB of memory, which is more than 40.4% of motherboards and equal to 31.9% of motherboards.
Memory channels
2
Memory channels
2
â–¼ Worse than 7% of models
This motherboard supports 2 memory channels, which is more than 0.2% of motherboards and equal to 92.6% of motherboards.
Maximum RAM speed
4,933 MT/s
Maximum RAM speed
4,933 MT/s
â–² Better than 57% of models
Market range: <2k MT/s – >8k MT/s
This motherboard supports memory speeds up to 4,933 MT/s, which is higher than that of 56.8% of motherboards and equal to that of 0.2% of motherboards.
Show more
N. of M.2 sockets
2
N. of M.2 sockets
2
â–¼ Worse than 35% of models
Market range: <0 – >4
This motherboard has 2 M.2 sockets, which is more than 30.8% of motherboards and equal to 34.4% of motherboards.
M.2 slot interface per slot
1x PCIe 4.0 x4/SATA, 1x PCIe 3.0 x4/SATA
M.2 slot interface per slot
1x PCIe 4.0 x4/SATA, 1x PCIe 3.0 x4/SATA
â–¼ Worse than 51% of models
This motherboard offers 1x PCIe 4.0x4/SATA, 1x PCIe 3.0x4/SATA for M.2 slot interfaces, which is slower than that of 50.8% of motherboards and equal to that of 1.3% of motherboards.
Key E Wi-Fi slot excluded.
N. of SATA 3 connectors
4
N. of SATA 3 connectors
4
â–¼ Worse than 48% of models
Market range: <4 – >8
This motherboard has 4 SATA 3 connectors, which is more than 5.6% of motherboards and equal to 46.2% of motherboards.
Supported RAID levels
0/1/10
Supported RAID levels
0/1/10
â–¼ Worse than 68% of models
This motherboard supports RAID levels 0/1/10, which is narrower than 68.1% of motherboards and equal to 23.3% of motherboards.
NVMe RAID support
yes
NVMe RAID support
yes
â–² Better than 40% of models
This motherboard supports NVMe RAID. 40.3% of motherboards support this feature.
Show more
N. of PCIe 5.0 x16 slots
0
N. of PCIe 5.0 x16 slots
0
â–¼ Worse than 31% of models
Market range: <0 – >1
This motherboard has 0 PCIe 5.0x16 slots, which is fewer than 31.5% of motherboards and equal to 68.5% of motherboards.
N. of PCIe 4.0 x16 slots
1
N. of PCIe 4.0 x16 slots
1
â–² Better than 56% of models
Market range: <0 – >1
This motherboard has 1 PCIe 4.0x16 slots, which is more than 55.5% of motherboards and equal to 35.4% of motherboards.
N. of PCIe 3.0 x16 slots
1
N. of PCIe 3.0 x16 slots
1
â–² Better than 40% of models
Market range: <0 – >3
This motherboard has 1 PCIe 3.0x16 slots, which is more than 40.5% of motherboards and equal to 26.8% of motherboards.
PCIe slot electrical configuration
x16/x4/x1
PCIe slot electrical configuration
x16/x4/x1
â–² Better than 78% of models
This motherboard uses x16/x4/x1 for PCIe slot electrical configuration, which is more flexible than that of 77.7% of motherboards and equal to that of 5.9% of motherboards.
PCIe bifurcation support
yes
PCIe bifurcation support
yes
â–² Better than 40% of models
This motherboard supports PCIe bifurcation. 40.4% of motherboards support this feature.
Show more
Total USB ports (rear I/O)
6
Total USB ports (rear I/O)
6
â–¼ Worse than 64% of models
Market range: <6 – >10
This motherboard has 6 USB ports (rear I/O), which is fewer than 64.3% of motherboards and equal to 32.7% of motherboards.
Total USB ports (including headers)
12
Total USB ports (including headers)
12
â–¼ Worse than 73% of models
Market range: <11 – >19
This motherboard has 12 USB ports (including headers), which is fewer than 72.6% of motherboards and equal to 16.3% of motherboards.
Total USB-C ports (rear I/O)
0
Total USB-C ports (rear I/O)
0
â–¼ Worse than 65% of models
Market range: <0 – >2
This motherboard 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)
0
Total USB-C ports (including headers)
0
â–¼ Worse than 70% of models
Market range: <0 – >3
This motherboard has 0 USB-C ports (including headers), which is fewer than 69.7% of motherboards and equal to 30.3% of motherboards.
N. of USB 3.2 Gen2x2 ports (USB-C)
0
N. of USB 3.2 Gen2x2 ports (USB-C)
0
â–¼ Worse than 18% of models
Market range: <0 – >1
This motherboard has 0 USB 3.2 Gen2x2 ports (USB-C), which is fewer than 18.3% of motherboards and equal to 81.7% of motherboards.
Show more
LAN speed
1 Gbps
LAN speed
1 Gbps
â–¼ Worse than 51% of models
Market range: <1 Gbps – >2.5 Gbps
This motherboard supports LAN speeds up to 1 Gbps, which is lower than that of 50.8% of motherboards and equal to that of 49.2% of motherboards.
LAN controller
Realtek RTL8111H
LAN controller
Realtek RTL8111H
â–¼ Worse than 53% of models
This motherboard uses the Realtek RTL8111H LAN controller, which is less advanced than that of 53% of motherboards and equal to that of 7.3% of motherboards.
N. of RJ45 ports
1
N. of RJ45 ports
1
â–¼ Worse than 14% of models
Market range: <1 – >2
This motherboard has 1 RJ45 ports, which is fewer than 14.4% of motherboards and equal to 85.6% of motherboards.
Wi-Fi connectivity
no
Wi-Fi connectivity
no
â–¼ Worse than 50% of models
This motherboard does not support Wi-Fi connectivity. 50.1% of motherboards support this feature.
Wi-Fi version
N/A
Show more
Audio codec
Realtek ALC897
Audio codec
Realtek ALC897
â–¼ Worse than 50% of models
This motherboard uses the Realtek ALC897 audio codec, which is less advanced than that of 50.3% of motherboards and equal to that of 29.2% of motherboards.
Audio channels
7.1
Audio channels
7.1
â–² Better than 5% of models
This motherboard offers 7.1 audio channels, which is more than 4.9% of motherboards and equal to 95.1% of motherboards.
Audio SNR
95 dB
Audio SNR
95 dB
â–¼ Worse than 82% of models
Market range: <95 dB – >120 dB
This motherboard has an audio SNR of 95 dB, which is lower than that of 82.5% of motherboards and equal to that of 10.6% of motherboards.
Headphone amp support
no
Headphone amp support
no
â–¼ Worse than 59% of models
This motherboard does not support a headphone amp. 59.3% of motherboards support this feature.
N. of 3.5mm audio jacks
3
N. of 3.5mm audio jacks
3
â–¼ Worse than 50% of models
Market range: <2 – >6
This motherboard has 3 3.5mm audio jacks, which is fewer than 50.4% of motherboards and equal to 38.1% of motherboards.
Show more
VRM phases
10
VRM phases
10
â–¼ Worse than 52% of models
This motherboard has 10 VRM phases, which is fewer than 52.5% of motherboards and equal to 3.7% of motherboards.
N. of CPU power connectors
1
N. of CPU power connectors
1
â–¼ Worse than 45% of models
Market range: <1 – >2
This motherboard has 1 CPU power connectors, which is fewer than 45.5% of motherboards and equal to 54.5% of motherboards.
N. of fan headers
3
N. of fan headers
3
â–¼ Worse than 77% of models
Market range: <3 – >8
This motherboard has 3 fan headers, which is fewer than 77.1% of motherboards and equal to 14.8% of motherboards.
Pump header
yes
Pump header
yes
â–² Better than 22% of models
This motherboard has a pump header. 21.9% of motherboards include this feature.
Pump header max current
0 A
Pump header max current
0 A
â–¼ Worse than 76% of models
Market range: <0 A – >3 A
This motherboard supports up to 0 A on the pump header, which is lower than that of 76% of motherboards and equal to that of 24% of motherboards.
Show more

BIOSTAR B550MX E Pro vs the average motherboard

246810TotalPlatform & FeaturesMemoryStorageExpansionPorts & USBNetworkAudioPower & Cooling
  • 1 more PCIe 4.0x16 slots
    N. of PCIe 4.0 x16 slots
    1
    â–² Better than 56% of models
    Market range: <0 – >1
    This motherboard 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
  • Newer CPU socket
    CPU socket
    AM4
    â–¼ Worse than 48% of models
    This motherboard has newer CPU socket than the average motherboard (AM4 vs LGA 1151). The average motherboard uses LGA 1151 CPU socket.
    AM4 vs LGA 1,151
  • Supports ECC memory
    ECC memory support
    yes
    â–² Better than 79% of models
    This motherboard supports ECC memory, while the average motherboard does not. 21% of motherboards support ECC memory.
    supports ECC unbuffered memory.
  • More advanced LAN controller
    LAN controller
    Realtek RTL8111H
    â–¼ Worse than 53% of models
    This motherboard has better LAN controller than the average motherboard (Realtek RTL8111H vs Killer + Intel + Realtek). The average motherboard uses Killer + Intel + Realtek LAN controller.
    Realtek RTL8111H vs Killer + Intel + Realtek
  • 1 more DVI outputs
    N. of DVI outputs
    1
    â–² Better than 78% of models
    Market range: <0 – >1
    This motherboard has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.
    1 vs 0
  • Includes VGA connector
    VGA connector
    yes
    â–² Better than 75% of models
    This motherboard has a VGA connector, while the average motherboard does not. 24.7% of motherboards include a VGA connector.
  • 61 mm shorter
    Height
    244 mm
    â–² Better than 62% of models
    Market range: <170 mm – >320 mm
    This motherboard is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
    244 mm vs 305 mm
  • More flexible PCIe lane configuration
    PCIe slot electrical configuration
    x16/x4/x1
    â–² Better than 78% of models
    This motherboard has more flexible PCIe lane configuration than the average motherboard (x16/x4/x1 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
    x16/x4/x1 vs x16/x0/x4, x8/x8/x4
  • Newer CPU socket
    CPU socket
    AM4
    â–¼ Worse than 48% of models
    This motherboard has newer CPU socket than the average motherboard (AM4 vs LGA 1151). The average motherboard uses LGA 1151 CPU socket.
    AM4 vs LGA 1,151
  • Supports ECC memory
    ECC memory support
    yes
    â–² Better than 79% of models
    This motherboard supports ECC memory, while the average motherboard does not. 21% of motherboards support ECC memory.
    supports ECC unbuffered memory.
  • 1 more PCIe 4.0x16 slots
    N. of PCIe 4.0 x16 slots
    1
    â–² Better than 56% of models
    Market range: <0 – >1
    This motherboard 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
  • More flexible PCIe lane configuration
    PCIe slot electrical configuration
    x16/x4/x1
    â–² Better than 78% of models
    This motherboard has more flexible PCIe lane configuration than the average motherboard (x16/x4/x1 vs x16/x0/x4, x8/x8/x4). The average motherboard uses x16/x0/x4, x8/x8/x4 PCIe slot lane configuration.
    x16/x4/x1 vs x16/x0/x4, x8/x8/x4
  • 1 more DVI outputs
    N. of DVI outputs
    1
    â–² Better than 78% of models
    Market range: <0 – >1
    This motherboard has more DVI outputs than the average motherboard (1 vs 0). The average motherboard has 0 DVI outputs.
    1 vs 0
  • Includes VGA connector
    VGA connector
    yes
    â–² Better than 75% of models
    This motherboard has a VGA connector, while the average motherboard does not. 24.7% of motherboards include a VGA connector.
  • More advanced LAN controller
    LAN controller
    Realtek RTL8111H
    â–¼ Worse than 53% of models
    This motherboard has better LAN controller than the average motherboard (Realtek RTL8111H vs Killer + Intel + Realtek). The average motherboard uses Killer + Intel + Realtek LAN controller.
    Realtek RTL8111H vs Killer + Intel + Realtek
  • 61 mm shorter
    Height
    244 mm
    â–² Better than 62% of models
    Market range: <170 mm – >320 mm
    This motherboard is shorter than the average motherboard (244 mm vs 305 mm). The average motherboard height is 305 mm.
    244 mm vs 305 mm
  • 60% lower LAN speed
    LAN speed
    1 Gbps
    â–¼ Worse than 51% of models
    Market range: <1 Gbps – >2.5 Gbps
    This motherboard 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
  • More basic motherboard chipset
    Chipset
    AMD B550
    â–² Better than 51% of models
    This motherboard has more basic motherboard chipset than the average motherboard (AMD B550 vs Intel B860). The average motherboard uses Intel B860 chipset.
    AMD B550 vs Intel B860
  • Slower M.2 slot interfaces
    M.2 slot interface per slot
    1x PCIe 4.0 x4/SATA, 1x PCIe 3.0 x4/SATA
    â–¼ Worse than 51% of models
    This motherboard has slower M.2 slot interfaces than the average motherboard (1x PCIe 4x4/SATA, 1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    Key E Wi-Fi slot excluded.
    1x PCIe 4.0x4/SATA, 1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • 2 fewer rear USB ports
    Total USB ports (rear I/O)
    6
    â–¼ Worse than 64% of models
    Market range: <6 – >10
    This motherboard has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    6 vs 8
  • 1 fewer rear USB-C ports
    Total USB-C ports (rear I/O)
    0
    â–¼ Worse than 65% of models
    Market range: <0 – >2
    This motherboard 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
  • No Wi-Fi connectivity
    Wi-Fi connectivity
    no
    â–¼ Worse than 50% of models
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50% of motherboards support Wi-Fi connectivity.
  • No Wi-Fi antenna included
    Wi-Fi antenna included
    no
    â–¼ Worse than 51% of models
    This motherboard does not include a Wi-Fi antenna, while the average motherboard does. 51.1% of motherboards include a Wi-Fi antenna.
  • No BIOS flashback support
    BIOS flashback
    no
    â–¼ Worse than 51% of models
    This motherboard does not support BIOS flashback, while the average motherboard does. 50.9% of motherboards support BIOS flashback.
    requires CPU/RAM
  • 34.4% lower user score
    User score
    6.0/ 10
    ✕
    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 distribution
    â–¼
    â–¼
    <55-66-77-88-99-10
    BIOSTAR B550MX E Pro
    the average motherboard
    â–¼ Worse than 67% of models
    BIOSTAR B550MX E Pro has a lower user score than the average motherboard (5.95 vs 8.000).
    5.95 vs 8
  • 78.9% less popular
    BIOSTAR B550MX E Pro is less popular than the average motherboard (3.5 vs 6.3).
    3.5 vs 6.26
  • 8% worse value for money
    BIOSTAR B550MX E Pro has worse value for money than the average motherboard (6.86 vs 7.4).
    6.86 vs 7.41
  • More basic motherboard chipset
    Chipset
    AMD B550
    â–² Better than 51% of models
    This motherboard has more basic motherboard chipset than the average motherboard (AMD B550 vs Intel B860). The average motherboard uses Intel B860 chipset.
    AMD B550 vs Intel B860
  • No BIOS flashback support
    BIOS flashback
    no
    â–¼ Worse than 51% of models
    This motherboard does not support BIOS flashback, while the average motherboard does. 50.9% of motherboards support BIOS flashback.
    requires CPU/RAM
  • Fewer BIOS update options
    BIOS update methods
    UEFI utility, Windows app
    â–¼ Worse than 85% of models
    This motherboard 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.
    UEFI utility, Windows app vs UEFI utility, flashback, Windows app
  • Fewer useful accessories
    Included accessories
    2x SATA cables, I/O shield, Wi-Fi antenna
    â–¼ Worse than 71% of models
    This motherboard has fewer useful accessories than the average motherboard (2x SATA cables, I/O shield, Wi-Fi antenna vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable). The average motherboard comes with 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable.
    2x SATA cables, I/O shield, Wi-Fi antenna vs 2x SATA cables, Wi-Fi antenna, M.2 kit, front-panel adapter, RGB cable
  • Older CPU platform
    CPU platform
    AMD
    â–¼ Worse than 68% of models
    This motherboard uses the AMD CPU platform compared to Intel on the average motherboard. The average motherboard uses Intel CPU platform.
    AMD vs Intel
  • Less versatile form factor
    Form factor
    microATX
    â–¼ Worse than 52% of models
    This motherboard has less versatile form factor than the average motherboard (microATX vs ATX). The average motherboard comes in ATX form factor.
    microATX vs ATX
  • Slower M.2 slot interfaces
    M.2 slot interface per slot
    1x PCIe 4.0 x4/SATA, 1x PCIe 3.0 x4/SATA
    â–¼ Worse than 51% of models
    This motherboard has slower M.2 slot interfaces than the average motherboard (1x PCIe 4x4/SATA, 1x PCIe 3x4/SATA vs 1x PCIe 5x4, 2x PCIe 4x4). The average motherboard uses 1x PCIe 5.0x4, 2x PCIe 4.0x4 M.2 slot interfaces.
    Key E Wi-Fi slot excluded.
    1x PCIe 4.0x4/SATA, 1x PCIe 3.0x4/SATA vs 1x PCIe 5.0x4, 2x PCIe 4.0x4
  • Fewer RAID options
    Supported RAID levels
    0/1/10
    â–¼ Worse than 68% of models
    This motherboard has fewer RAID options than the average motherboard (0/1/10 vs 0/1/5/10). The average motherboard has 0/1/5/10 RAID level/s.
    0/1/10 vs 0/1/5/10
  • No multi-GPU support
    Multi-GPU support
    no
    â–¼ Worse than 55% of models
    This motherboard does not support multi-GPU, while the average motherboard does. 54.6% of motherboards support multi-GPU.
  • 2 fewer rear USB ports
    Total USB ports (rear I/O)
    6
    â–¼ Worse than 64% of models
    Market range: <6 – >10
    This motherboard has fewer rear USB ports than the average motherboard (6 vs 8). The average motherboard has 8 rear USB port/s.
    6 vs 8
  • 1 fewer rear USB-C ports
    Total USB-C ports (rear I/O)
    0
    â–¼ Worse than 65% of models
    Market range: <0 – >2
    This motherboard 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
  • 3 fewer total USB connections
    Total USB ports (including headers)
    12
    â–¼ Worse than 73% of models
    Market range: <11 – >19
    This motherboard has fewer total USB connections than the average motherboard (12 vs 15). The average motherboard has 15 total USB connections.
    12 vs 15
  • 1 fewer USB 3.2 Gen2 ports
    N. of USB 3.2 Gen2 ports (USB-A)
    0
    â–¼ Worse than 63% of models
    Market range: <0 – >4
    This motherboard 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.
    0 vs 1
  • 1 fewer total USB-C connections
    Total USB-C ports (including headers)
    0
    â–¼ Worse than 70% of models
    Market range: <0 – >3
    This motherboard has fewer total USB-C connections than the average motherboard (0 vs 1). The average motherboard has 1 total USB-C connections.
    0 vs 1
  • 60% lower LAN speed
    LAN speed
    1 Gbps
    â–¼ Worse than 51% of models
    Market range: <1 Gbps – >2.5 Gbps
    This motherboard 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
  • No Wi-Fi connectivity
    Wi-Fi connectivity
    no
    â–¼ Worse than 50% of models
    This motherboard does not support Wi-Fi connectivity, while the average motherboard does. 50% of motherboards support Wi-Fi connectivity.
  • No Wi-Fi antenna included
    Wi-Fi antenna included
    no
    â–¼ Worse than 51% of models
    This motherboard 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
    Audio SNR
    95 dB
    â–¼ Worse than 82% of models
    Market range: <95 dB – >120 dB
    This motherboard has a lower audio SNR than the average motherboard (95 dB vs 115 dB). The average motherboard has audio SNR of 115 dB.
    95 dB vs 115 dB
  • No headphone amp support
    Headphone amp support
    no
    â–¼ Worse than 59% of models
    This motherboard does not support a headphone amp, while the average motherboard does. 59.2% of motherboards support a headphone amp.
  • 2 fewer 3.5mm audio jacks
    N. of 3.5mm audio jacks
    3
    â–¼ Worse than 50% of models
    Market range: <2 – >6
    This motherboard has fewer 3.5mm audio jacks than the average motherboard (3 vs 5). The average motherboard has 5 3.5mm audio jacks.
    3 vs 5
  • No optical S/PDIF out
    Optical S/PDIF out (TOSLINK)
    no
    â–¼ Worse than 56% of models
    This motherboard does not have optical S/PDIF out, while the average motherboard does. 55.8% of motherboards include optical S/PDIF out.
  • 2 fewer ARGB headers
    N. of ARGB headers (3-pin)
    0
    â–¼ Worse than 62% of models
    Market range: <0 – >3
    This motherboard has fewer ARGB headers than the average motherboard (0 vs 2). The average motherboard has 2 ARGB header/s.
    0 vs 2
  • 2.5 fewer fan headers
    N. of fan headers
    3
    â–¼ Worse than 77% of models
    Market range: <3 – >8
    This motherboard has fewer fan headers than the average motherboard (3 vs 5.5). The average motherboard has 5.5 fan header/s.
    3 vs 5.5
  • No onboard RGB lighting
    Onboard RGB lighting
    no
    â–¼ Worse than 50% of models
    This motherboard does not have onboard RGB lighting, while the average motherboard does. 50.4% of motherboards include onboard RGB lighting.
  • 1 fewer RGB headers
    N. of RGB headers (4-pin)
    0
    â–¼ Worse than 69% of models
    Market range: <0 – >2
    This motherboard has fewer RGB headers than the average motherboard (0 vs 1). The average motherboard has 1 RGB header/s.
    0 vs 1
  • 2 A lower pump header current limit
    Pump header max current
    0 A
    â–¼ Worse than 76% of models
    Market range: <0 A – >3 A
    This motherboard 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.
    0 A vs 2 A

Graphic comparison of BIOSTAR B550MX E Pro and other products in the Motherboards category

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Third-party reviews

United Kingdom
amazon
3.5
6 Reviews
United States
Amazon_logo.png
3.5
6 Reviews

(Reviews last updated: May 2026)

What customers like about BIOSTAR B550MX E Pro?

  • Competitive pricing, often cheaper than comparable B550 boards from major brands
  • Solid connectivity options including PCIe 4.0 support for GPUs and M.2 SSDs
  • Features a Debug LED to help identify hardware issues during boot
  • Includes legacy video outputs (VGA and DVI) which are useful for older monitors
  • Decent performance for budget-to-midrange builds using 6-core or 8-core CPUs

What customers dislike about BIOSTAR B550MX E Pro?

  • Weak VRM (Voltage Regulator Module) thermal performance, which can lead to high temperatures or throttling under heavy stress
  • Subpar RAM support with some users reporting difficulty reaching advertised speeds or stable overclocks
  • Lacks built-in Wi-Fi (only provides the M.2 slot for it), requiring a separate purchase of a Wi-Fi card
  • Relatively basic BIOS interface that some users find tricky or less intuitive compared to competitors
  • Lower perceived build quality and limited customer support compared to top-tier brands like ASUS or MSI

Video reviews

Hands-on testing, unboxing, and real-world video evaluations

Compare BIOSTAR B550MX E Pro with other products in the Motherboards category

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