Product Description |
MSI B550-A PRO – motherboard – ATX – Socket AM4 – AMD B550 |
Product Type |
Motherboard – ATX |
Chipset Type |
AMD B550 |
Processor Socket |
Socket AM4 |
Compatible Processors |
Ryzen (supports 3rd Generation Ryzen and New Generation Ryzen with Radeon Graphics) |
Max RAM Size |
128 GB |
RAM Supported |
4 DIMM slots – DDR4, non-ECC, ECC (operate in non-ECC mode), unbuffered |
Storage Ports |
6 x SATA-600 (RAID), 2 x M.2 |
USB / FireWire Ports |
1 x USB-C Gen 2 + 1 x USB 3.2 Gen 2 + 2 x USB 3.2 Gen 1 + 4 x USB 2.0 + (1 x USB-C Gen 1 + 2 x USB 3.2 Gen 1 + 4 x USB 2.0 via headers) |
Max Allocated RAM Size |
2 GB |
Audio |
HD Audio (8-channel) |
LAN |
Gigabit Ethernet |
Max Processors Qty |
1 |
Max Size |
128 GB |
Technology |
DDR4 |
Bus Clock |
2400 MHz, 1866 MHz, 2133 MHz, 2800 MHz, 3000 MHz, 2666 MHz, 2933 MHz, 3466 MHz (O.C.), 3733 MHz (O.C.), 3600 MHz (O.C.), 3866 MHz (O.C.), 4000 MHz (O.C.), 4133 MHz (O.C.), 4400 MHz (O.C.), 4266 MHz (O.C.), 3200 MHz, 3066 MHz |
Supported RAM Integrity Check |
Non-ECC, ECC (operate in non-ECC mode) |
Registered or Buffered |
Unbuffered |
Features |
Dual channel memory architecture, supported ECC modules operate in non-ECC mode, A-XMP support |
Type |
HD Audio (8-channel) |
Audio Codec |
Realtek ALC892 |
Compliant Standards |
High Definition Audio |
Network Controller |
Realtek RTL8111H |
Network Interfaces |
Gigabit Ethernet |
Expansion Slots |
1 x CPU ¦ 4 x DIMM 288-pin ¦ 1 x PCIe 4.0 x16 ¦ 1 x PCIe 3.0 x16 (x4 mode (auto turn-off if M.2 is occupied)) ¦ 2 x PCIe 3.0 x1 |
Storage Interfaces |
SATA-600 -connectors: 6 x 7pin Serial ATA – RAID 0 / RAID 1 / RAID 10 ¦ SATA-600 / PCIe 4.0 -connectors: 1 x M.2 – RAID 0 / RAID 1 ¦ PCIe 3.0 -connectors: 1 x M.2 – RAID 0 / RAID 1 |
Interfaces |
1 x LAN (Gigabit Ethernet) ¦ 1 x audio line-in – mini-jack ¦ 1 x audio line-out – mini-jack ¦ 1 x microphone – mini-jack ¦ 1 x audio line-out (side surround) – mini-jack ¦ 2 x USB 3.2 Gen 1 ¦ 1 x USB 3.2 Gen 2 ¦ 1 x audio line-out (center/subwoofer) – mini-jack ¦ 1 x audio line-out (rear) – mini-jack ¦ 1 x USB-C Gen2 ¦ 1 x PS/2 keyboard / mouse ¦ 4 x USB 2.0 ¦ 1 x HDMI ¦ 1 x DisplayPort |
Internal Interfaces |
4 x USB 2.0 – header ¦ 2 x USB 3.2 Gen 1 – header ¦ 1 x USB-C Gen 1 – header ¦ 1 x audio – header |
Power Connectors |
24-pin main power connector, 8-pin ATX12V connector |
Hardware Features |
AMD CrossFireX technology support, Debug LED, Double ESD Protection, 2oz Copper PCB, M.2 Shield FROZR, MSI Core Boost, MSI PCIe Steel Slot, MSI Mystic Light Sync |
Included Accessories |
Case badge, I/O back cover |
Cables Included |
2 x Serial ATA cable |
Software Included |
Drivers & utilities |
Width |
12 in |
Depth |
9.6 in |
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