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Green Micro-ATX server motherboard with silver sockets and black heatsinks

ASRock Rack

ASRock Rack B650D4U-2L2T/BCM Micro-ATX server motherboard EPYC 4004 Ryzen 9000 8000 7000

SKU CH-N8Z4-GBC8W

Micro-ATX server board for single-socket AMD EPYC 4004 and Ryzen 7000/8000/9000 CPUs with four DDR5 ECC UDIMM slots, PCIe 5.0 x16 and x4, dual 10GbE Broadcom LAN, dual 1GbE Intel LAN.

  • CPU Socket TypeSingle Socket AM5 (LGA 1718)
  • CPU TypeSupports AMD EPYC 4004 and AMD Ryzen 8000/7000 Series Proces
  • Number of Processor Support1
  • CPU FeaturesThermal Design Power: Up to 170W by proper cooling solution
  • North BridgeAMD B650E
  • Memory Slots4 DIMM slots (2DPC) DDR5 288-pin ECC/non-ECC UDIMM
  • Supports AMD EPYC 4004 and Ryzen 9000/8000/7000 series CPUs
  • 4 DDR5 DIMM slots with ECC up to 48 GB per module
  • Dual 10 GbE Broadcom BCM57416 plus dual 1 GbE Intel i210 LAN
  • PCIe 5.0 x16 and x4 slots plus PCIe 4.0 x1 expansion
  • M.2 slot with PCIe 5.0 x4 for 2280/2242 drives

Socket AM5 EPYC & Ryzen server board

The ASRock Rack B650D4U-2L2T/BCM is a Micro-ATX server motherboard built for the AM5 platform. It accepts a single AMD EPYC 4004 or Ryzen 9000, 8000 and 7000 series processor in the LGA 1718 socket. The B650E chipset provides PCIe 5.0 lanes to the primary expansion slots and the single M.2 connector. Dual 10 GbE and dual 1 GbE ports are integrated on board.

Suited for dense single-socket builds, not multi-CPU

This board fits builders who need a compact server platform with dual 10 GbE networking and ECC memory support in a 9.6-inch square form factor. It is not for deployments that require two processor sockets, more than four DIMM slots, or additional M.2 sockets beyond the single CPU-attached slot. Buyers needing more SATA ports than the four provided should also look elsewhere.

One M.2 slot wired to the CPU

The board includes a single M-key M.2 connector that operates at PCIe 5.0 x4 and accepts 2280 or 2242 form-factor drives. This lone slot is the only direct high-speed storage interface on the motherboard, so the number of fast drives you can install without add-in cards is limited to one. Plan your storage topology around this single connector.

Highlights

  • Supports AMD EPYC 4004 and Ryzen 9000/8000/7000 series CPUs
  • 4 DDR5 DIMM slots with ECC up to 48 GB per module
  • Dual 10 GbE Broadcom BCM57416 plus dual 1 GbE Intel i210 LAN
  • PCIe 5.0 x16 and x4 slots plus PCIe 4.0 x1 expansion
  • M.2 slot with PCIe 5.0 x4 for 2280/2242 drives

Specifications

BrandAsRock Rack
ModelB650D4U-2L2T/BCM
CPU Socket TypeSingle Socket AM5 (LGA 1718)
CPU TypeSupports AMD EPYC 4004 and AMD Ryzen 8000/7000 Series Processors
Number of Processor Support1
CPU FeaturesThermal Design Power: Up to 170W by proper cooling solution
North BridgeAMD B650E
Memory Slots4 DIMM slots (2DPC)
DDR5 288-pin ECC/non-ECC UDIMM
Memory Standard5200 MHz (1DPC); 3600 MHz (2DPC)
Maximum Memory SupportedMax. Capacity per DIMM: 48GB
ECC SupportedYes
PCI Express 5.0 x16SLOT6: PCIe5.0 x16 [CPU]
PCI Express x4SLOT7: PCIe5.0 x4 [CPU]
PCI Express x1SLOT4: PCIe4.0 x1 [FCH]
SATA4 x SATA 6.0Gb/s
M.21 M-key (PCIe5.0 x4), supports 2280/2242 form factor [CPU]
Onboard Video ChipsetAspeed AST2600
LAN ChipsetBroadcom BCM57416: 2 RJ45 (10GbE)
LAN Speed10Gbps
Second LAN ChipsetIntel i210: 2 RJ45 (1GbE)
Second LAN Speed10/100/1000Mbps
Max LAN Speed10Gbps
Back I/O PortsUID Button/LED: 1 UID button w/ LED
VGA Port: 1 DB15 (VGA), 1 DisplayPort, 1 HDMI
Serial Port: 1 DB9 (COM)
USB 3.2 Gen1 Port: 4 Type-A (USB3.2 Gen1)
RJ45: 2 RJ45 (10GbE), 2 RJ45 (1GbE), 1 dedicated IPMI
Other ConnectorsPower Connector: 1 (24-pin, ATX main power), 2 (8-pin, ATX 12V)
Auxiliary Panel Header: 1 (18-pin): chassis intrusion, system fault LED, LAN activity LED
System Panel: 1 (9-pin): power switch, reset switch, system power LED, HDD activity LED
VGA header: 1
Speaker Header: 1
Buzzer: 1
Fan Header: 7 (6-pin)
TPM Header: 1 (13-pin, SPI)
SMBus header: 1
PMBus header: 1
IPMB Header: 1
Clear CMOS: 1
Others: 1 (3-pin, 80 debug port header)
Front Lan LED Connector: 1
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"

Questions about this item

Will my existing DDR5-5200 ECC UDIMMs run at full speed when I populate all four slots on the B650D4U-2L2T/BCM?

With one DIMM per channel the board runs DDR5 at 5200 MHz; filling all four slots (2DPC) drops the supported rate to 3600 MHz.

How can I verify the dual 10GbE and dual 1GbE ports are functioning after installation?

Connect each RJ45 to a switch, then check the OS network panel for 10 Gbps link speed on the Broadcom BCM57416 ports and 1 Gbps on the Intel i210 ports.

Which components ship with the board and what must I source separately?

The box contains the Micro-ATX motherboard, I/O shield and documentation; you must add an AM5 (LGA 1718) CPU, DDR5 ECC or non-ECC UDIMMs, storage drives and a chassis with adequate cooling for up to 170 W TDP.

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