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ASRock Rack B550D4-4L

B550 · AM4 · ATX
ASRock Rack B550D4-4L product image

General

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

Highlights

Memory4× DDR4 · max 128 GB · 3200 MT/s
M.2 Slots1×
GPU Slots1× x16 · PCIe 4.0
Fastest USBUSB 10 Gbps
NetworkLAN 1 Gbps
Power Stages4+2 phases · 90 A

Manufacturer Links

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

Memory TypeDDR4
Max RAM Speed3200 MT/s
Max RAM128 GB
DIMM Slots4
RAM Form FactorDIMM
ECC SupportNo

Expansion and Storage

PCIe Version4.0
PCIe x16 Slots1
PCIe x1 Slots0
PCIe Slot Modes
1× PCIe 4.0 x16
1× PCIe 4.0 x8 · electrical: x4
M.2 SlotsM.2_1: PCIe 3.0 x4
SATA Ports4
Highest USBUSB 10 Gbps
RAID0/1/10

Power Delivery (VRM)

Phase Layout4+2
CPU Phases4
SoC Phases2
Amps per Phase90 A
PWM ControllerISL69247 (max. 8 phases)
MOSFET4x 90A ISL99390 (SPS)

Connectivity and Audio

LAN ChipIntel I210-AT (1Gb/s) x4
Rear I/O
2× USB 5Gbps Type-A
2× USB 10Gbps Type-A
1× HDMI
5× 1 Gbps LAN
Front Panel Headers2× USB 2.0
Case Fan Headers6× 4-pin PWM fan
TPM HeaderYes
BIOS Chip32 MB
Dual BIOSNo
Special Features
All solid capacitors
speaker
Diagnostic LED (segment display)