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Green Micro ATX server motherboard with silver CPU socket, four black DDR4 slots, three PCIe expansion slots, six SATA ports

ASRock Rack

ASRock Rack E3C242D4U server motherboard

SKU CH-8RVE-X6ZPF MPN E3C242D4U

Micro-ATX server board with LGA 1151 socket for Intel Xeon E-2100 or E-2200 CPUs, four DDR4 slots up to 64 GB, six SATA3 ports, three PCIe 3.0 slots.

  • ProcessorSupports Intel Xeon E-2100 / E-2200 Series Processors
  • Form factorMicro ATX
  • ChipsetIntel C242
  • Number of DDR4 slots4 × 288-pin
  • DDR4 memory supportNon-ECC UDIMM: 1600 / 1866 / 2133 / 2400 / 2666 MHz ECC UDIM
  • Max supported RAMSupport up to 64 GB DDR4 ECC / non-ECC UDIMM
  • Supports Intel Xeon E-2100 and E-2200 series processors
  • Four DDR4 slots deliver dual-channel memory up to 64 GB
  • Six SATA3 ports plus an M.2 PCIe 3.0 x2 connection for storage
  • Three PCIe 3.0 slots at x16, x8 and x4 for expansion cards
  • IPMI 2.0 with KVM over a dedicated Intel I210 LAN port

Micro ATX server board

The ASRock Rack E3C242D4U is a Micro ATX motherboard built around the Intel C242 chipset for LGA 1151 Xeon E-2100 and E-2200 processors. It targets system integrators and small-business IT staff who need a compact platform with IPMI 2.0 remote management and dual Intel I210 gigabit LAN. The board fits 9.6 by 9.6 inch chassis and supports up to 64 GB of DDR4 ECC or non-ECC UDIMM across four 288-pin slots.

IPMI and expansion layout

Integrated IPMI 2.0 with KVM and a dedicated RTL8211E LAN port lets administrators control the server remotely even when the OS is down. Six SATA3 6 Gb/s ports from the C242 handle storage, while SATA0 doubles as a SATA DOM connector and shares bandwidth with an M.2 PCIe 3.0 x2 interface. Three PCIe 3.0 slots — x16, x8 and x4 — provide room for add-in cards, though the x16 slot drops to x8 when the x8 slot is populated.

Installation notes

The Micro ATX form factor uses standard mounting holes, so the board drops into any compatible case without adapters. Builders must populate memory in matched pairs to enable dual-channel operation and should verify that the chosen Xeon cooler clears the DIMM slots and the Aspeed AST2500 BMC heatsink. The shared SATA0 and M.2 lane means only one of those devices can be active at a time, a detail that sometimes catches first-time installers off guard.

How it compares

Measured against everything we stock in Server & Workstation Boards, at today’s prices. Recalculated every night.

Price $189.99
Cheaper than about 63% of the 776 comparable items (median $254.49).

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Specifications

Product
Brand nameAsRock Rack
Model nameE3C242D4U
Processor
ProcessorSupports Intel Xeon E-2100 / E-2200 Series Processors
ChipsetIntel C242
Memory
DDR4 memory supportNon-ECC UDIMM: 1600 / 1866 / 2133 / 2400 / 2666 MHz
ECC UDIMM: 1600 / 1866 / 2133 / 2400 / 2666 MHz
Max supported RAMSupport up to 64 GB DDR4 ECC / non-ECC UDIMM
Memory channelsDual Channel
Storage
SATA portsIntel C242: 6 x SATA3 6Gb/s (SATA0-5, SATA0 supports SATA DOM, and is shared with M.2 (PCIE 3.0 (x2) ) / SATA3)
Graphics
Onboard video chipAspeed AST2500
Connectivity
Number of LAN2 x RJ45 GLAN by Intel i210
1 x RJ45 Dedicated IPMI LAN port
Ports & slots
Number of DDR4 slots4 × 288-pin
PCIe 3.0 x16 slotsSlot 6: Gen3 x16 link, auto switch to x8 link if Slot 4 is occupied
PCIe x4 slotsSlot 5: Gen3 x4 link
Video connectors1 x D-Sub
Ethernet port2 x RJ45 Gigabit Ethernet LAN ports
1 x RJ45 Dedicated IPMI LAN port
LAN Ports with LED (ACT / LINK LED and SPEED LED)
USB 3.1 ports2 (Gen2) x USB 3.1, 2 (Gen1) x USB 3.1
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Shipping weight1.03 kg
Package size305 × 287 × 69 mm
More details
PCI express x8Slot 4: Gen3 x8 link

Questions about this item

When will the IPMI 2.0 firmware on the E3C242D4U need updating?

The integrated IPMI 2.0 with KVM and dedicated RTL8211E LAN receives firmware updates from ASRock Rack; apply them when new security advisories or feature releases are published.

Which PCIe slot loses bandwidth first when both the x16 and x8 slots are populated?

Slot 6 (Gen3 x16) automatically switches to an x8 link as soon as Slot 4 (Gen3 x8) is occupied, so the x16 slot is the first to reduce throughput.

How loud and hot does the Aspeed AST2500 BMC run during continuous 24/7 operation?

The Aspeed AST2500 management controller draws minimal power and is passively cooled, so it adds negligible noise or heat even under sustained load.

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