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Deep Micro-ATX server motherboard with SP6 socket and dual SFP28 ports

ASRock Rack

ASRock Rack SIENAD8UD-2L2Q Deep Micro-ATX server motherboard 2x SFP28

SKU CH-C7BG-MD139 MPN SIENAD8UD-2L2Q

Deep Micro-ATX server board for single AMD EPYC 8004 with 8 DDR5 slots, dual 25GbE SFP28, PCIe 5.0 x16 and MCIO storage

  • CPU Socket TypeSocket SP6
  • CPU TypeAMD EPYC 8004 Series
  • Number of Processor Support1
  • Memory Slots8 x DDR5 288-pin
  • Memory StandardDDR5 4800
  • Maximum Memory Supported768GB
  • Single-socket EPYC 8004 support for efficient server builds
  • 8 DDR5 slots deliver up to 768GB registered memory
  • Two 25GbE SFP28 ports plus dual 1GbE for flexible networking
  • PCIe 5.0 and CXL 1.1 slots enable high-speed expansion
  • Deep Micro-ATX form factor fits compact chassis with ATX PSU support

Deep Micro-ATX server board

This Deep Micro-ATX motherboard fits a single Socket SP6 AMD EPYC 8004 series processor. Eight DDR5 RDIMM slots support up to 768GB of registered memory at 4800 MT/s. Dual 25Gbps SFP28 ports and a dedicated 1Gbps management LAN handle high-throughput and out-of-band traffic. The Aspeed AST2600 provides basic display output.

Two PCIe 5.0 x16 plus CXL 1.1

Two full-length PCIe 5.0 x16 slots and one x8 slot all support CXL 1.1 for accelerator or memory-expansion cards. Two MCIO connectors offer either PCIe 5.0 x8 or eight SATA 6Gbps ports, while three additional MCIO lanes deliver more PCIe 5.0 x8 bandwidth. An OCuLink port adds PCIe 3.0 x4 connectivity for legacy devices.

Two M.2 slots and flexible power

Two M-key M.2 sockets accept 2280 or 22110 drives on PCIe 5.0 x4 links. The board works with standard ATX power supplies or a 12V DC input for dense chassis designs. Builders needing more than one processor socket or more than eight DIMM channels should choose a larger form factor.

Highlights

  • Single-socket EPYC 8004 support for efficient server builds
  • 8 DDR5 slots deliver up to 768GB registered memory
  • Two 25GbE SFP28 ports plus dual 1GbE for flexible networking
  • PCIe 5.0 and CXL 1.1 slots enable high-speed expansion
  • Deep Micro-ATX form factor fits compact chassis with ATX PSU support

Specifications

BrandAsRock Rack
ModelSIENAD8UD-2L2Q
CPU Socket TypeSocket SP6
CPU TypeAMD EPYC 8004 Series
Number of Processor Support1
Memory Slots8 x DDR5 288-pin
Memory StandardDDR5 4800
Maximum Memory Supported768GB
RegisteredYes
PCI Express 5.0 x16SLOT6: PCIe5.0 / CXL1.1 x16
SLOT4: PCIe5.0 / CXL1.1 x16
PCI Express x8SLOT7: PCIe5.0 / CXL1.1 x8
Other Slots2 MCIO (PCIe5.0 x8 or 8 SATA 6Gb/s)
3 MCIO (PCIe5.0 x8)
1 OCuLink (PCIe3.0 x4)
M.22 M-key (PCIe5.0 x4), supports 22110/2280 form factor
Onboard Video ChipsetAspeed AST2600
LAN ChipsetBroadcom BCM57414
LAN Speed25Gbps
Second LAN ChipsetIntel I210
Second LAN Speed10/100/1000Mbps
Max LAN Speed2 x 25Gbps + 2 x 1Gbps
Back I/O Ports1 x D-Sub / 2 x LAN (RJ45) / 2 x SFP28 / 2 x USB 3.2 Gen 1 Type-A
Onboard USBUSB 3.2 (Gen1) Header: 1 header (19-pin, 2 USB3.2 Gen1)
Other ConnectorsPower Connector: 1 (4-pin, ATX PSU signal) w/ ATX 24-pin adapter cable, 3 (8-pin, ATX 12V) support 12V DC-in
Other Power Connectors: 1 (6-pin) for HDD power
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
Speaker Header: 1 (4-pin)
Buzzer: 1
Fan Header: 6 (6-pin)
Thermal Sensor Header: 1
TPM Header: 1 (13-pin, SPI)
SGPIO Header: 3
SMBus header: 1
PMBus header: 1
IPMB Header: 1
Clear CMOS: 1 (contact pads)
Front Lan LED Con
BIOS FeatureAMI UEFI BIOS; 256 Mb SPI Flash ROM
ASRock Rack Instant Flash, ACPI 6.4 and above compliance wake up events, SMBIOS 3.5.0 and above, Plug and Play(PnP)
Form FactorDeep Micro-ATX
Dimensions (W x L)9.6" x 10.5"
Shipping weight1.52 kg
Package size356 × 323 × 84 mm

Questions about this item

What clearance does the Deep Micro-ATX 9.6" x 10.5" board need in a chassis?

The board measures 9.6 inches by 10.5 inches and follows the Deep Micro-ATX form factor, so the case must accept that exact footprint and the matching mounting holes.

Which CPU socket and processor series does this board require for installation?

Install a single AMD EPYC 8004 series processor into the Socket SP6 (LGA 4844); the socket is keyed for that generation only.

What memory modules are validated for the 8 DDR5 288-pin slots?

The qualified list includes RDIMMs such as Kingston 96 GB DDR5 5600, Micron 64 GB and 96 GB DDR5 4800, Samsung 96 GB DDR5 4800, SMART 16 GB and 64 GB DDR5 4800, and Micron 16 GB, 32 GB and 48 GB DDR5 4800 or 5600.

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