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ASUS ROG Strix B550-A Gaming

B550 · AM4 · ATX
ASUS ROG Strix B550-A Gaming product image

General

ChipsetB550
SocketAM4
Form FactorATX
Supported CPU FamiliesRyzen 3000, Ryzen 4000G, Ryzen 5000, Ryzen 5000G

Highlights

Memory4× DDR4 · max 128 GB · 5100 MT/s
M.2 Slots2×
GPU Slots2× x16 · PCIe 4.0
Fastest USBUSB 10 Gbps
NetworkLAN 2.5 Gbps
Power Stages4+1 phases · 50 A

Manufacturer Links

BIOS downloads ↗CPU support list ↗Driver downloads ↗Memory QVL ↗
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Memory

Memory TypeDDR4
Max RAM Speed5100 MT/s
Max RAM128 GB
DIMM Slots4
RAM Form FactorDIMM
ECC SupportYes

Expansion and Storage

PCIe Version4.0
PCIe x16 Slots2
PCIe x1 Slots3
PCIe Slot Modes
1× PCIe 4.0 x16
1× PCIe 3.0 x16 · electrical: x4
3× PCIe 3.0 x1
M.2 Slots
M.2_1: PCIe 4.0 x4 · SATA supported
M.2_2: PCIe 3.0 x4 · SATA supported
SATA Ports6
Highest USBUSB 10 Gbps
RAID0/1/10

Power Delivery (VRM)

Phase Layout4+1
CPU Phases4
SoC Phases1
Amps per Phase50 A
PWM ControllerASP1106 (RT3667BE, max. 6 phases)
MOSFET12x 50A SiC639 (DrMOS)

Connectivity and Audio

Audio CodecRealtek ALC1220, DTS Sound Unbound, ASUS SupremeFX
LAN ChipIntel I225-V (2.5Gb/s)
Rear I/O
2× USB 2.0 Type-A
4× USB 5Gbps Type-A
1× USB 10Gbps Type-A
1× USB 10Gbps Type-C
1× HDMI
1× DisplayPort
1× 2.5 Gbps LAN
5× Audio jacks (3.5 mm)
1× S/PDIF optical out
Front Panel Headers
4× USB 2.0
2× USB-A 5Gbps
HD Audio (front audio)
Case Fan Headers
5× 4-pin PWM fan
1× Pump (liquid cooling)
RGB Header
1× ARGB (5V 3-pin)
2× RGB (12V 4-pin)
TPM HeaderNo
BIOS Chip32 MB
Dual BIOSNo
Special Features
Audio+solid capacitors
Diagnostic LED (LED indicators)
I/O-shield integrated
White Build-compatible (PCB primarily black)
2x M.2 passive heatsink
supports AMD 2-Way-CrossFireX (x16/x4)