The ASUS B550 µATX motherboard is perfect for gaming builds, supporting AMD Ryzen 5000, 4000G, and 3000 processors on Socket AM4. With 4 DIMM slots for up to 128GB DDR4, PCIe 4.0 x16, dual M.2 slots, Wi-Fi 6, Bluetooth 5.2, 7.1-channel audio, and customizable RGB headers, it's built for performance.
ASUS Prime B550M-A WIFI II Mainboard Sockel AM4
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motherboard basic properties |
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| Manufacturer | ASUS |
| chipset | AMD B550 |
| form factor | µATX |
| BIOS type |
256 Mb Flash ROM, UEFI AMI BIOS |
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motherboard processor |
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| processor family | AMD |
| processor socket | Socket AM4 |
| Supported processors |
Ryzen 5000, Ryzen 4000G, Ryzen 3000, without TDP restriction |
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motherboard memory |
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| number of DIMM slots | 4x |
| Maximum main memory | 128 GB |
| storage type | DDR4 |
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motherboard expansion slots |
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| PCI-Express x16 (total) | 1x |
| PCI-Express 4.0 x16 | 1x |
| PCI-Express x1 | 2x (3.0) |
| M.2 | 2x |
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motherboard external connections |
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| HDMI | Yes |
| Two | Yes |
| USB 3.1 Type-A | 2x |
| USB 3.0 | 4x |
| PS/2 | 1 x |
| Ethernet (LAN) | 1 x |
| 3,5mm Klinke | 3x |
| Toslink/S/PDIF (optical) | Yes |
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motherboard internal connections |
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| SATA 6 GB/s | 4x |
| USB 3.0 Header | 1 x |
| USB 2.0 Header | 2 x |
| Serial | Yes |
| TPM-Header | Yes |
| RAID | 36535 |
| power connections |
1x 24-Pin ATX, 1x 8-Pin EPS12V |
| audio channels | 7.1 |
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motherboard cooling |
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| CPU fan 4-pin | 2x |
| case fan 4-pin | 2x |
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motherboard lighting |
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| RGB-Header 4-Pin | 2x |
| ARGB-Header 3-Pin | 1x |
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motherboard network |
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| LAN Controller |
Realtek RTL8111H 1Gb Ethernet |
| Transferrate |
10/100/1000 Mb/s |
| WLAN |
Wi-Fi 6 (WLAN 802.11a/​b/​g/​n/​ac/​ax) |
| Bluetooth | 5.2 |
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motherboard features |
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| Audio+solid capacitors | Yes |
