MSI PRO B550-A PRO AM4 AMD B550 USB 3.0 ATX AMD Motherboard
- $145.99
- $110.99
- Save: $35.00 (23%)
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Reviews(2,005)
Stability-focused no-frills board with the feature set I was looking for.
Taking off one egg because the following situation is not clearly addressed by MSI: Once assembled board would not post. My first guess was it needed a bios update since Ryzen is known to be picky with regards to memory. But how can you flash the bios if i you can't get into it? Thankfully this board features a bios flash button on the back panel. Follow the instructions from MSI to use this feature. In summary: download latest bios from MSI, rename bios file to MSI.ROM and drop it in the root of a FAT32-formatted flash drive. With the computer POWERED OFF, put the flash drive into the lower usb port and push the flash bios button. A red LED will begin blinking indicating the bios is being updated. Once the update is complete the LED will turn off. After I did this the board posted and I was able to move onto installing the OS. Hope this helps anyone who is in the same situation.
Of course only time will tell but out of the gate this board appears to be a solid choice for no-frills micro atx builds focused mainly on stability and longevity.
None
None
Everything about this motherboard is good, except for the fact that the bios flashback for zen 3 didn't work(Ryzen 5 5600x). I tried with multiple different drives multiple times, followed countless guides, made sure it was "MSI.ROM", show file extension names, MBR Fat32, low capacity drive, etc etc, but nothing worked. I bought a B550 Gaming Carbon Wifi, and it flashed first try, and I also saw on reddit that many others were experiencing similar issues, so if it isn't working for you, I would recommend you return it and get a new board.
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rightWarranty & Returns
Warranty
Return Policies
Return for refund within: 30 days
Return for replacement within: 30 days
This item is covered by Newegg.com's 30-Day Return Policy
Manufacturer Contact Info
Website: https://us.msi.com/
Support Phone: 1-626-271-1004
Features & Details
- AMD B550
- Supports AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series processors *
- * Not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G.
- DDR4 4400+ / 4266 / 4133 / 4000 / 3866 / 3733 / 3600 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC MODE
- DDR4 3200 / 3066 / 3000 / 2933 / 2800 / 2667 / 2400 / 2133 / 1866 by JEDEC
- 1DPC 1R Max speed 4800
- 1DPC 2R max speed 3866
- 2DPC 1R max speed 4000
- 2DPC 2R max speed 3600
Specifications
| Best Seller Ranking | #96 in AMD Motherboards |
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| Brand | MSI |
|---|---|
| Series | PRO |
| Model | B550-A PRO |
| CPU Socket Type | AM4 |
|---|---|
| CPU Type | Supports AMD Ryzen 5000 Series / 4000 G-Series / 3000 Series processors * * Not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G. |
| Chipset | AMD B550 |
|---|
| Number of Memory Slots | 4x288pin (DDR4) |
|---|---|
| Memory Standard | DDR4 4400+ / 4266 / 4133 / 4000 / 3866 / 3733 / 3600 / 3466 / 3200 / 3066 / 3000 / 2933 / 2800 / 2667 by A-XMP OC MODE DDR4 3200 / 3066 / 3000 / 2933 / 2800 / 2667 / 2400 / 2133 / 1866 by JEDEC 1DPC 1R Max speed 4800 1DPC 2R max speed 3866 2DPC 1R max speed 4000 2DPC 2R max speed 3600 |
| Maximum Memory Supported | 128GB |
| Channel Supported | Dual Channel |
| ECC Supported | Non-ECC |
| Buffer Supported | Un-buffered |
| PCI Express 4.0 x16 | 1 x PCI Express 4.0 x16* * Actual support may vary by CPU. |
|---|---|
| PCI Express 3.0 x16 | 1 x PCI Express 3.0 x16* * Supports x4 speed. * When installing PCIe SSD in M.2_2, PCI_E3 slot will be unavailable. |
| PCI Express x16 | 1 x PCI Express x16 |
| PCI Express x1 | 2 x PCIe 3.0 x1 |
| Serial ATA (SATA) | 6 x SATA 6Gb/s |
|---|---|
| M.2 | 2 x M.2 slots (Key M): M2_1 slot (from AMD Processor): Supports PCIe 4.0/3.0 x4 * Supports SATA 6Gb/s Supports 2242/2260/2280/22110 storage devices M2_2 slot (from AMD B550 chipset): Supports PCIe 3.0 x4 Supports 2242/2260/2280 storage devices * The supported specification depends on installed processor. |
| SATA RAID | 0/1/10 |
| Onboard Video Chipset | Supported only by CPU with integrated graphic |
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| Audio Chipset | Realtek ALC892/ALC897 |
|---|---|
| Audio Channels | 7.1 Channels |
| LAN Chipset | Realtek RTL8111H |
|---|---|
| Max LAN Speed | 1Gbps |
| Back I/O Ports | 1 x DisplayPort 1 x HDMI 1 x LAN (RJ45) 1 x PS/2 Keyboard/Mouse Combo 1 x USB 3.2 Gen 2 Type-A 1 x USB 3.2 Gen 2 Type-C 2 x USB 3.2 Gen 1 Type-A 4 x USB 2.0/1.1 6 x Audio Jacks Flash BIOS Button |
|---|---|
| USB 3.0 | 4 x USB 3.0 |
| Onboard USB | 1 x USB 3.2 Gen 1 5Gbps Type-C port 1 x USB 3.2 Gen 1 5Gbps connector (supports additional 2 USB 3.2 Gen 1 5Gbps ports) 2 x USB 2.0 connectors (supports additional 4 USB 2.0 ports) |
|---|---|
| Other Connectors | 1 x 4-pin CPU fan connector 1 x 4-pin water-pump fan connector 6 x 4-pin system fan connectors 1 x Front panel audio connector 2 x System panel connectors 1 x Chassis Intrusion connector 1 x 4-pin RGB LED connector 2 x 3-pin RAINBOW LED connectors 1 x TPM module connector 1 x Clear CMOS jumper |
| Form Factor | ATX |
|---|---|
| LED Lighting | RGB |
| Dimensions (W x L) | 12.0" x 9.6" |
| Power Pin | 1 x 24-pin ATX main power connector 1 x 8-pin ATX 12V power connector |
| Windows 11 | Supported |
|---|
| Features | Supports AMD Ryzen 5000 & 3000 Series desktop processors (not compatible with AMD Ryzen 5 3400G & Ryzen 3 3200G) and AMD Ryzen 4000 G-Series desktop processors Supports DDR4 Memory, up to 4400(OC) MHz Lightning Fast Experience: PCIe 4.0, Lightning Gen4 x4 M.2 with M.2 Shield Frozr, AMD Turbo USB 3.2 Gen 2 Premium Thermal Solution: Extended Heatsink Design with additional choke thermal pad and 7W/mK pad, and M.2 Shield Frozr are built for high performance system and non-stop works Powerful Design: Core Boost, Digital PWM IC, 2oz Thickened Copper PCB, Creator Genie, DDR4 Boost Audio Boost: Reward your ears with studio grade sound quality Multi-GPU: With Steel armor PCI-E slots. Supports 2-Way AMD Crossfire Dragon Center: A brand new software which integrates all MSI exclusive tools with user friendly user interface |
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| First Listed on Newegg | June 15, 2020 |
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