Audio
| Audio Channels | 7.1 |
Video
| Onboard Video | CPU Dependent Video |
Memory
| Maximum Memory | 128 GB |
| 128 GB | |
| Memory Technology | DDR4 SDRAM |
| Number of Memory Slots | 4 |
| Memory Form Factor | UDIMM |
| DIMM | |
| Memory Speed Supported | 2666 MHz |
| 2800 MHz | |
| 3000 MHz | |
| 3200 MHz | |
| 3333 MHz | |
| 3466 MHz | |
| 3600 MHz | |
| 3733 MHz | |
| 3866 MHz | |
| 4000 MHz | |
| 4800 MHz | |
| 4866 MHz | |
| 2133 MHz | |
| 2400 MHz | |
| 2666 MHz | |
| 2800 MHz | |
| 3000 MHz | |
| 3200 MHz | |
| 3333 MHz | |
| 3400 MHz | |
| 3466 MHz | |
| 3600 MHz | |
| 3733 MHz | |
| 3866 MHz | |
| 4000 MHz | |
| 4133 MHz | |
| 4200 MHz | |
| 4266 MHz | |
| 4333 MHz | |
| 4400 MHz | |
| 4466 MHz | |
| 4600 MHz | |
| 4800 MHz | |
| 4866 MHz | |
| 3400 MHz | |
| 4133 MHz | |
| 4200 MHz | |
| 4266 MHz | |
| 4333 MHz | |
| 4400 MHz | |
| 4466 MHz | |
| 4600 MHz | |
| 2133 MHz | |
| 2400 MHz |
Physical Characteristics
| Form Factor | Micro ATX |
| Width | 9.6″ |
| Depth | 9.6″ |
I/O Expansions
| Number of PCI Express x1 Slots | 2 |
| Number of Total Expansion Slots | 3 |
| Number of PCI Express x16 Slots | 1 |
| Total Number of PCI Express Slots | 3 |
Miscellaneous
| Country of Origin | China |
| Environmentally Friendly | Yes |
| Environmental Certification | RoHS |
| Brand Compatibility | AMD |
Network & Communication
| Bluetooth | Yes |
| Gigabit Ethernet | Yes |
| Wireless LAN | Yes |
| Wireless LAN Standard | IEEE 802.11a/b/g/n/ac |
I/O Controller
| RAID Levels | 10 |
| 1 | |
| 0 | |
| Controller Type | Serial ATA/600 |
| RAID Supported | Yes |
Interfaces/Ports
| HDMI | Yes |
| DVI | Yes |
| VGA | Yes |
| Number of Network (RJ-45) Ports | 1 |
| Total Number of USB Ports | 6 |
| Number of USB 3.2 Ports | 6 |
Onboard Interfaces
| Number of SATA Interfaces | 4 |
| Total Number of Onboard USB Ports | 6 |
| Number of Onboard USB 2.0 Ports | 4 |
| Onboard S/PDIF Header | Yes |
| Number of M.2 Interfaces | 2 |
| Number of Onboard USB 3.2 Ports | 2 |
General Information
| Product Type | Desktop Motherboard |
| Manufacturer Part Number | PRIME B550M-A AC |
| Manufacturer Website Address | http://usa.asus.com |
| Manufacturer | ASUS Computer International |
| Product Model | B550M-A AC |
| Product Name | Prime B550M-A AC Desktop Motherboard |
| Product Line | Prime |
| Brand Name | Asus |
Processor & Chipset
| Processor Supported | Ryzen 9 |
| Ryzen 7 PRO | |
| Ryzen 7 | |
| Ryzen 5 Pro | |
| Ryzen 5 | |
| Ryzen 3 PRO | |
| Ryzen 3 | |
| Ryzen 9 PRO | |
| Total Processor Supported | 1 |
| Processor Socket | Socket AM4 |
| Chipset Manufacturer | AMD |
| Chipset Model | B550 |
