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Green Micro-ATX server board with four SFP28 ports and embedded Xeon D-1749NT

ASRock Rack

ASRock Rack D1749NTD4U-4Q Micro-ATX server motherboard Intel Xeon D-1749NT 4 SFP28 25GbE

SKU CH-DAEJ-SWSB1 MPN D1749NTD4U-4Q

Micro-ATX server board with an integrated Xeon D-1749NT, four DDR4 slots up to 2667 MHz, PCIe 4.0 and 3.0 expansion, dual M.2, and four 25 GbE SFP28 ports

  • ProcessorIntel Xeon D-1749NT
  • Form factorMicro ATX
  • Network speed25 Gbit/s
  • Supported CPU count1
  • Processor detailsThermal Design Power Up to 90 W
  • Number of DDR4 slots4 × 288-pin
  • Integrated Xeon D-1749NT up to 90W TDP
  • Four 25GbE SFP28 ports for high-speed networking
  • Four DDR4 slots support ECC RDIMM up to 2667MHz
  • PCIe4.0 x16 slot or dual SlimSAS for flexible expansion
  • Dual M.2 slots with PCIe3.0 x4 or SATA 6Gb/s

Micro-ATX Server Board with Xeon D-1749NT

The ASRock Rack D1749NTD4U-4Q is a Micro-ATX server motherboard built around a soldered Intel Xeon D-1749NT processor with a thermal design power of up to 90W. It targets builders who need integrated 25GbE networking and flexible storage in a compact 9.6 x 9.6 inch form factor for dense rack or edge deployments.

Four DDR4 Slots and Lane-Shared Expansion

The board provides four 288-pin DDR4 slots supporting RDIMM and ECC or non-ECC UDIMM at up to 2667 MHz. Expansion centres on a PCIe 4.0 x16 slot that shares lanes with two SlimSAS connectors, plus a PCIe 3.0 x8 slot that shares lanes with two Mini-SAS HD connectors; populating the x16 slot disables the SlimSAS interfaces, and the x8 slot can disable the Mini-SAS HD links by BIOS setting.

Quad SFP28 25GbE Decides Fit

Four onboard SFP28 ports deliver up to 4 x 25Gbps Ethernet, making this board the right choice only for deployments that require high-density 25GbE connectivity without add-in cards; buyers who need more than four 25GbE links or who require RJ45 10GbE instead should look elsewhere.

How it compares

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

Price $1,639.99
Pricier than about 94% of the 776 comparable items (median $254.49).

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Specifications

Product
Brand nameAsRock Rack
Model nameD1749NTD4U-4Q
Processor
ProcessorIntel Xeon D-1749NT
Supported CPU count1
Processor detailsThermal Design Power Up to 90 W
Memory
DDR4 memory supportRDIMM: up to 2667 MHz
ECC/non-ECC UDIMM: up to 2667 MHz
Max supported RAMMax. DIMM Frequency
- RDIMM: up to 2667 MHz
- ECC/non-ECC UDIMM: up to 2667 MHz
ECC supportYes
Storage
M.2 slotsM2_1 (PCIe3.0 x4 or SATA 6Gb/s); support 22110/2280 form factor [CPU]
M2_2* (PCIe3.0 x4 or SATA 6Gb/s); support 22110/2280 form factor [CPU]
*M2_2 shares lanes with 4 SATA 7-pin; 4 SATA 7-pin will disable when M2_2 is populated
Connectivity
Network speed25 Gbit/s
Number of LAN4 SFP28 (25GbE)
Maximum network speed4 × 25 Gbit/s
Ports & slots
Number of DDR4 slots4 × 288-pin
Onboard USB headersUSB 3.2 (Gen1) Header: 1 header (19-pin, 2 USB3.2 Gen1)
Size & build
Form factorMicro ATX
Width and length9.6 in × 9.6 in
Shipping weight1.81 kg
Package size229 × 229 × 51 mm
More details
Registered statusYes
PCI express x8SLOT6*: PCIe3.0 x8 [CPU]
*SLOT6 shares lanes with 2 Mini-SAS HD by BIOS setting
SAS3 Mini-SAS HD*, 4 SATA 7-pin or 1 M2_2, 1 M2_1
*2 Mini-SAS HD shares lanes with SLOT6 by BIOS setting

Questions about this item

Will the four 25GbE SFP28 ports share bandwidth with an older PCIe 3.0 x8 add-in card I keep?

SLOT6 runs at PCIe 3.0 x8 and shares lanes with the two Mini-SAS HD connectors by BIOS setting; the four SFP28 ports are separate so they keep full 25Gbps each regardless of what you install in SLOT6.

How do I confirm the Xeon D-1749NT is running at its 90W TDP after assembly?

Watch the IPMI sensor readings or BIOS hardware monitor — they report real-time CPU package power so you can verify the processor settles at or below 90W under load.

Which cables and drives must I source separately for the three Mini-SAS HD and four SATA 7-pin connectors?

The board supplies the Mini-SAS HD and SATA 7-pin headers only; you need Mini-SAS HD to SATA breakout cables or backplanes for the three SAS ports and standard SATA data cables for the four 7-pin ports.

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