ASROCK B550 PRO4

• Supports AMD AM4 Socket Ryzen™ 3000, 3000 G-Series, 4000 G-Series, 5000 and 5000 G-Series Desktop Processors*
• 8 Power Phase Design, Digi Power
• Supports DDR4 4733+ (OC)
• 1 PCIe 4.0 x16, 1 PCIe 3.0 x16, 2 PCIe 3.0 x1, 1 M.2 Key E for WiFi
• Graphics Output Options: HDMI, D-Sub
• AMD CrossFireX™
• 7.1 CH HD Audio (Realtek ALC1200 Audio Codec), Nahimic Audio
• 6 SATA3, 1 Hyper M.2 (PCIe Gen4 x4), 1 M.2 (PCIe Gen3 x2 & SATA3)
• 2 USB 3.2 Gen2 (Rear Type A+C), 6 USB 3.2 Gen1 (2 Front, 4 Rear)
• Gigabit LAN

BIOS

- 256Mb AMI UEFI Legal BIOS with GUI support
- Supports "Plug and Play"
- ACPI 5.1 compliance wake up events
- Supports jumperfree
- SMBIOS 2.3 support
- CPU, CPU VDDCR_SOC, DRAM, VPPM, 1.05V_PROM_S5, 2.5V_PROM, +1.8VSB, VDDP Voltage Multi-adjustment