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Green Mini-ITX server board with silver sockets and dual LAN ports

ASRock Rack

ASRock Rack EC266D2I Mini-ITX server motherboard LGA 1700 DDR5 64GB

SKU CH-Q2G8-V3HHH MPN EC266D2I

Mini-ITX server board with LGA 1700 socket, two DDR5 ECC slots up to 64 GB, PCIe 5.0 x16, dual 1 GbE LAN and Aspeed AST2600 video

  • CPU Socket TypeLGA 1700
  • CPU TypeSupports Intel Xeon E-2400 series and Intel Pentium Gold G74
  • Number of Processor Support1
  • North BridgeIntel C266
  • Memory Slots2 x DDR5 288-pin
  • Memory StandardDDR5 4800
  • Supports Intel Xeon E-2400 series processors for server workloads
  • 64GB maximum DDR5 4800 ECC memory across two slots
  • PCIe 5.0 x16 slot enables high-speed expansion cards
  • Dual 1GbE LAN ports provide redundant network connectivity
  • Two OCuLink connectors support PCIe or SATA storage configurations

Compact server board for single-socket Xeon E-2400

The ASRock Rack EC266D2I is a Mini-ITX motherboard designed for the LGA 1700 socket and Intel Xeon E-2400 series processors, with support for Pentium Gold G7400 and G7400T CPUs. It targets system integrators and IT professionals who need a dense, single-socket platform with ECC memory and multiple storage lanes in a 6.7-inch square footprint. The board ships new and includes a 24-pin ATX adapter cable for standard power supplies.

Sustained load behaviour

Under continuous workloads the single PCIe 5.0 x16 slot connects directly to the CPU, providing full bandwidth for accelerators or high-throughput NICs without PCH contention. Two OCuLink connectors — one PCIe 4.0 x4 and one PCIe 3.0 x4 — each support four SATA 6Gb/s drives, allowing up to eight drives to operate simultaneously through the chipset. The Aspeed AST2600 BMC and dual Intel I210 1GbE ports remain active for remote management and network traffic during extended operation.

64 GB DDR5 ECC ceiling decides fit

Maximum memory capacity is 64 GB across two 288-pin DDR5 4800 slots with ECC UDIMM support, and the qualified vendor list validates 16 GB and 32 GB modules at 4800 and 5600 MT/s. Builds requiring more than 64 GB or non-ECC consumer memory cannot use this board, while configurations staying within the limit gain error correction and validated stability for always-on services.

Highlights

  • Supports Intel Xeon E-2400 series processors for server workloads
  • 64GB maximum DDR5 4800 ECC memory across two slots
  • PCIe 5.0 x16 slot enables high-speed expansion cards
  • Dual 1GbE LAN ports provide redundant network connectivity
  • Two OCuLink connectors support PCIe or SATA storage configurations

Specifications

BrandAsRock Rack
ModelEC266D2I
CPU Socket TypeLGA 1700
CPU TypeSupports Intel Xeon E-2400 series and Intel Pentium Gold G7400/G7400T processors
Number of Processor Support1
North BridgeIntel C266
Memory Slots2 x DDR5 288-pin
Memory StandardDDR5 4800
Maximum Memory Supported64GB
ECC SupportedYes
PCI Express 5.0 x16SLOT7: PCIe5.0 x16 [CPU]
Other Slots1 OCuLink (PCIe4.0 x4 or 4 SATA 6Gb/s) [PCH]
1 OCuLink (PCIe3.0 x4 or 4 SATA 6Gb/s) [PCH]
M.21 M-key (PCIe4.0 x4); support 2280 form factor [CPU]
Onboard Video ChipsetAspeed AST2600
LAN ChipsetIntel I210
LAN Speed10/100/1000Mbps
Max LAN Speed2 x 1Gbps
Back I/O Ports1 x D-Sub / 2 x LAN (RJ45) / 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 Micro-Fit (4-pin, ATX PSU signal) w/ ATX 24-pin adapter cable, 1 (8-pin, ATX 12V) support 12V DC-in
Other Power Connectors: 1 ATX (4-pin) for HDD power when using 12V DC-in power source
Auxiliary Panel Header: 1 (9-pin): chassis intrusion, system fault LED, LAN activity LED
System Panel: 1 (9-pin): power switch, reset switch, system power LED, HDD activity LED
COM Header: 1(9-pin)
Fan Header: 3 (4-pin)
Thermal Sensor Header: 1
TPM Header: 1 (13-pin, SPI)
SGPIO Header: 1
SMBus header: 1
PMBus header: 1
IPMB Header: 1
Clear CMOS: 1 (contact pads)
Others: 1 NCSI heade
BIOS FeatureAMI 256Mb SPI Flash ROM
Plug and Play, ACPI 6.4 and above compliance wake up events, SMBIOS 2.8 and above, ASRock Rack Instant Flash
Form FactorMini ITX
Dimensions (W x L)6.7" x 6.7"
Shipping weight0.84 kg
Package size272 × 244 × 64 mm

Questions about this item

How much heat does the Aspeed AST2600 onboard video chipset add when the board runs 24/7?

The Aspeed AST2600 is a low-power management controller; its thermal contribution is negligible compared to the CPU and memory under continuous load.

Which power connectors must my PSU provide for the Micro-Fit 4-pin ATX signal and 8-pin 12V DC-in?

The board includes a Micro-Fit 4-pin to ATX 24-pin adapter cable and requires an 8-pin ATX 12V connector; a 4-pin ATX connector is also present for HDD power when using 12V DC-in.

Can I keep my existing DDR5 4800 RDIMM modules and use both 288-pin slots?

Yes, the board supports up to 64 GB across two DDR5 288-pin slots with ECC UDIMM at 4800 MT/s; validated modules include 16 GB and 32 GB RDIMMs.

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