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Green Micro ATX server board with silver LGA 1151 socket, four black DDR4 slots, dual 10G RJ45 ports, IPMI LAN, and PCIe x16, x8

ASRock Rack

ASRock Rack E3C242D4U2-2T server motherboard LGA 1151 C242 dual 10G LAN

SKU CH-ZY6M-HH2EP MPN E3C242D4U2-2T

Micro ATX server board with dual 10 GbE LAN, IPMI 2.0 KVM and four DDR4 ECC slots up to 128 GB

  • CPU TypeSupports Intel Xeon E-2100 / E-2200 Series Processors
  • North BridgeIntel C242
  • Number of DDR4 Slots4 x 288-pin
  • DDR4 StandardDDR4 2666 / 2400 ECC / non-ECC U DIMM
  • Maximum Memory SupportedSupport up to 128GB DDR4 ECC / non-ECC UDIMM
  • Channel SupportedDual Channel
  • Supports Intel Xeon E-2100 and E-2200 series processors for server workloads
  • Dual-channel DDR4 2666/2400 with ECC up to 128 GB for data integrity
  • Dual 10 GbE Intel X550-AT2 ports plus dedicated IPMI LAN for high-speed management
  • Six SATA3 6 Gb/s plus one M.2 SATA slot shared with SATA0 for flexible storage
  • Micro ATX 9.6" x 9.6" form factor with PCIe 3.0 x16, x8 and x1 expansion slots

Micro ATX server board with dual 10G LAN

The ASRock Rack E3C242D4U2-2T is a Micro ATX server motherboard built around the Intel C242 chipset and LGA 1151 socket. It supports Intel Xeon E-2100 and E-2200 series processors in a compact 9.6" x 9.6" form factor. Dual onboard 10G base-T ports driven by the Intel X550-AT2 controller provide high-throughput networking for dense deployments.

Suited for storage-focused nodes.

This board fits builders who need up to 128GB of DDR4 2666 ECC memory across four slots and six SATA3 ports with an M.2 SATA option. The single PCIe 3.0 x16 slot shares bandwidth with the x8 slot, limiting simultaneous high-bandwidth add-in cards. Buyers who require multiple full-length GPU or FPGA cards should consider a different platform.

Dual 10G base-T decides fit for network-heavy roles

Two RJ45 10G ports from the Intel X550-AT2 are the headline connectivity feature, backed by a dedicated IPMI LAN port for out-of-band management. Storage expands through six SATA3 connectors and one M.2 SATA slot that shares a port with SATA_0. Expansion consists of one PCIe 3.0 x16, one x8 and one x1 slot, with the x16 and x8 lanes shared.

Highlights

  • Supports Intel Xeon E-2100 and E-2200 series processors for server workloads
  • Dual-channel DDR4 2666/2400 with ECC up to 128 GB for data integrity
  • Dual 10 GbE Intel X550-AT2 ports plus dedicated IPMI LAN for high-speed management
  • Six SATA3 6 Gb/s plus one M.2 SATA slot shared with SATA0 for flexible storage
  • Micro ATX 9.6" x 9.6" form factor with PCIe 3.0 x16, x8 and x1 expansion slots

Specifications

BrandAsRock Rack
ModelE3C242D4U2-2T
CPU TypeSupports Intel Xeon E-2100 / E-2200 Series Processors
North BridgeIntel C242
Number of DDR4 Slots4 x 288-pin
DDR4 StandardDDR4 2666 / 2400 ECC / non-ECC U DIMM
Maximum Memory SupportedSupport up to 128GB DDR4 ECC / non-ECC UDIMM
Channel SupportedDual Channel
PCI Express 3.0 x16Slot 6: Gen3 x16 link, auto switch to x8 link if Slot 4 is occupied (Physical x16, EE x16/x8 (from CPU), shared with Slot 4)
PCI Express x8Slot 4: Gen3 x8 link (Physical x8, EE x0/x8 (from CPU), shared with Slot 6)
PCI Express x1Slot 7: Gen3 x1 link (Physical x1, EEx1 (from PCH))
SATA6 x SATA3 6Gb/s (SATA0-5, SATA_0 supports SATA DOM)
5 x SATA3 6Gb/s (SATA1-5) and 1 x M.2 SSD SATA connected*
*The M.2 slot (M2_1) is shared with the SATA_0 connector. When M2_1 is populated with a M.2 SATA3 module, the Pin 7 of SATA_0 is disabled.
Onboard Video ChipsetAspeed AST2500
Number of LAN2 x RJ45 10G base-T by Intel X550-AT2
1 x RJ45 Dedicated IPMI LAN port by RTL8211E
Video Ports1 x D-Sub
USB 3.02 x USB 3.0
USB 3.12 x USB 3.1
FeaturesSupports Intel Xeon E-2100 Series Processors
Supports Dual channel DDR4 2666 / 2400 ECC UDIMM
Support 6 x SATA3, 1 x M.2 by C242
Supports 1 x PCIe 3.0 x16, 1 x PCIe 3.0 x8, 1 x PCIe 3.0x1
Integrated IPMI 2.0 with KVM and Dedicated LAN (RTL8211E)
Supports 2 x 10G base-T by Intel X550-AT2
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Shipping weight1.07 kg
Package size305 × 287 × 74 mm

Questions about this item

What is the maximum DDR4 memory capacity supported by the four DIMM slots?

The board supports up to 128 GB of DDR4 2666 or 2400 ECC or non-ECC UDIMM in dual-channel mode across the four 288-pin slots.

How much heat do the dual 10G base-T ports add during continuous operation?

The Intel X550-AT2 controller runs two 10G base-T RJ45 ports; 10G base-T PHYs typically draw several watts each, so expect measurable warmth under sustained traffic.

Which processor and memory must already be on hand for the board to post?

An Intel Xeon E-2100 or E-2200 series CPU for the LGA 1151 socket and at least one DDR4 2666 or 2400 ECC or non-ECC UDIMM are required.

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