ASRock B550D4-4L B550 AM4 Socket PGA1331 Max.32GB ATX Motherboard

• ATX (12"x 9.6")

• Support AMD Ryzen 5000 Series Desktop Processors

• 4 DIMM slots (2DPC), supports DDR4 ECC/non-ECC UDIMM

• 1 PCIe 4.0 x16, 1 PCIe 4.0 x4

• Supports 1 M.2 (PCIe3.0 x4 or SATA 6Gb/s)

• 6 SATA 6Gb/s

• 4 RJ45 (1GbE) by Intel® i210

• HDMI

• Remote management (IPMI)

Physical Status
Form Factor
ATX
Dimensions
12inch x 9.6inch (305 mm x 244 mm)
Processor System
CPU
Supports:
AMD Ryzen^TM 5000 and 4000 G-Series Desktop Processors with Radeon^TM Graphics
AMD Ryzen^TM 5000 and 3000 Series Desktop Processors
AMD Ryzen^TM PRO 5000, 4000 and 3000^Note Series Desktop Processors
Note: Not compatible with AMD Ryzen^TM PRO 3000 Series Desktop Processors with Radeon^TM Graphics
Socket
Single Socket AM4 (PGA1331)
Chipset
AMD B550
System Memory
Supported DIMM Quantity
4 DIMM slots (2DPC)
Supported Type
Supports DDR4 288-pin ECC^Note /non-ECC UDIMM
Note: For AMD Ryzen Desktop Processors with Radeon Graphics, ECC support is only with Processors with PRO technologies.
Max. Capacity per DIMM
ECC/non-ECC UDIMM: up to 32GB
DIMM Frequency
up to 3200 MHz^Note
Note: AMD Ryzen^TM 3000 G-Series Desktop Processors with Radeon^TM Graphics support up to 2666 MHz
Voltage
1.2V
PCIe Expansion Slots (SLOT7 close to CPU)
PCIe x 16
SLOT6: PCIe x16 (PCIe4.0^Note x16) CPU
Note: Supports PCIe3.0 when using AMD Ryzen^TM 5000, 4000 G-Series Desktop Processors with Radeon^TM Graphics
PCIe x 8
SLOT4: PCIe x8 (PCIe4.0^Note x4) CPU
Note: Supports PCIe3.0 when using AMD Ryzen^TM 5000, 4000 G-Series Desktop Processors with Radeon^TM Graphics
Other PCIe Expansion Connectors
M.2 slot
1 M-key (PCIe3.0 x4 or SATA 6Gb/s), support 22110/2280/2242 form factor (FCH)
SATA/SAS Storage
PCH Built-in Storage
AMD B550 (4 SATA 6Gb/s, RAID 0/1/10):
4 SATA 7-pin
Additional SATA Controller
ASM1061 (2 SATA6Gb/s):
2 SATA 7-pin
Ethernet
Additional GbE Controller
4 Intel i210: 4 RJ45 (1GbE)
Server Management
BMC Controller
ASPEED AST2500
IPMI Dedicated GLAN
1 x Realtek RTL8211E for dedicated management GLAN
Graphics
Controller
ASPEED AST2500:
1 DB15, 1 (15-pin) header

AMD Ryzen^TM Desktop Processors with Radeon^TM Graphics:
1 HDMI
Rear I/O
UID Button/LED
1 UID button, 1 UID LED
VGA Port
1 DB15
Serial Port
1 DB9
USB 3.2 Gen1 Port
2 Type-A (USB3.2 Gen1)
USB 3.2 Gen2 Port
2 Type-A (USB3.2 Gen2)
RJ45
4 RJ45 (1GbE)
1 dedicated IPMI
HDMI
1
Internal Connector/Headers
Auxiliary Panel Header
1 (18-pin): chassis intrusion, system fault LED, LAN1/LAN2 activity LED, locate, SMBus
System Panel
1 (9-pin): power switch, reset switch, system power LED, HDD activity LED
COM Header
1
Video output
1
Speaker Header
1
Buzzer
1
Fan Header
6 (6-pin)
Thermal Sensor Header
1
TPM Header
1 (17-pin, LPC), 1 (13-pin, SPI)
SMBus header
1
PMB header
1
IPMB Header
1
Clear CMOS
1 (contact pads)
Front Lan LED Connector
1 for LAN3/LAN4
USB 3.2 (Gen1) Header
1 (19-pin, 2 USB3.2 Gen1)
USB 2.0 Header
1 (9-pin, 2 USB2.0)
Type A USB 3.2 (Gen1) Port
1 (Type-A, 1 USB3.2 Gen1)
Power Connector
1 (24-pin, ATX main power), 1 (8-pin, ATX 12V), 1 (4-pin, ATX 12V)
LED Indicators
Standby PWR LED 5vsb
1
80 Debug Port LED
1
Fan Fail LED
6
System BIOS
BIOS Type
AMI UEFI BIOS, 256 Mb (32MB) SPI Flash ROM
BIOS Features
Plug and Play, ACPI 5.1 compliance wake up events, SMBIOS 2.3
Hardware Monitor
Temperature
CPU, DDR, MB, Card Side, FCH, TR1 sensing
Fan
Fan Tachometer
CPU Quiet Fan (Allow Chassis Fan Speed Auto-Adjust by CPU Temperature)
Multi-Speed Control
Voltage
3VSB, 5VSB, VCPU, VSOC, VCCM, APU VDDP, 1.05V_PROM_S5, 2.5V_PROM, 1.05V_PROM_RUN, BAT, 3V, 5V, 12V
Environment
Temperature
Operation temperature: 10^oC to 35^oC / Non operation temperature: -40^oC to 70^oC
Humidity
Non operation humidity: 20% to 90% ( Non condensing)
Item Dimension (L inchxW inchxH inch)
30 x 15 x 13

Weight
43.00 lb

Warranty Information
36 Months