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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

  • CPU TypeIntel Xeon D-1749NT
  • Number of Processor Support1
  • CPU FeaturesThermal Design Power Up to 90W
  • Number of DDR4 Slots4 x 288-pin
  • DDR4 StandardRDIMM: up to 2667 MHz ECC/non-ECC UDIMM: up to 2667 MHz
  • Maximum Memory SupportedMax. DIMM Frequency - RDIMM: up to 2667 MHz - ECC/non-ECC UD
  • 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.

Puntos fuertes

  • 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

Especificaciones

BrandAsRock Rack
ModelD1749NTD4U-4Q
CPU TypeIntel Xeon D-1749NT
Number of Processor Support1
CPU FeaturesThermal Design Power Up to 90W
Number of DDR4 Slots4 x 288-pin
DDR4 StandardRDIMM: up to 2667 MHz
ECC/non-ECC UDIMM: up to 2667 MHz
Maximum Memory SupportedMax. DIMM Frequency
- RDIMM: up to 2667 MHz
- ECC/non-ECC UDIMM: up to 2667 MHz
ECC SupportedYes
RegisteredYes
PCI Express 4.0 x16SLOT7*: PCIe4.0 x16 [CPU]
*SLOT7 shares lanes with 2 SlimSAS.
-Slimline1 and Slimline2 will disable when SLOT7 (PCIe4.0 x16) is populated
-Slimline1 will disable when SLOT7 (PCIe4.0 x8) is populated.
PCI Express x8SLOT6*: PCIe3.0 x8 [CPU]
*SLOT6 shares lanes with 2 Mini-SAS HD by BIOS setting
Other Slots2 SlimSAS* (PCIe4.0 x8) [CPU]
*SLOT7 shares lanes with 2 SlimSAS.
-Slimline1 and Slimline2 will disable when SLOT7 (PCIe4.0 x16) is populated
-Slimline1 will disable when SLOT7 (PCIe4.0 x8) is populated
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
M.2M2_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
Number of LAN4 SFP28 (25GbE)
LAN Speed25Gbps
Max LAN Speed4 x 25Gbps
Back I/O PortsUID Button/LED: 1 UID button w/ LED
VGA Port: 1 DB15 (VGA)
Serial Port: 1 DB9 (COM)
USB 3.2 Port: 2 Type-A (USB3.2 Gen1)
RJ45: 1 dedicated IPMI
Other network connector: 4 SFP28 (25GbE)
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, 2 ( 8-pin, ATX 12V) support 12V DC-in
Other Power Connectors: 1 (6-pin, SATA power)
Auxiliary Panel Header: 1 (18-pin): chassis intrusion, LAN1/LAN2 activity LED, locate, SMBus
System Panel: 1 (9-pin): power switch, reset switch, system power LED, HDD activity LED
VGA header: 1 (15-pin)
Fan Header: 1 (4-pin, CPU fan), 5 (6-pin, SYS fans)
TPM Header: 1 (17-pin, LPC), 1 (13-pin, SPI)
VROC header: 1
SGPIO Header: 1
HSBP: 1
SMBus header: 1
PMBus header: 1
IPMB Header: 1
Clear CMOS: 1
NMI Header: 1
Form FactorMicro ATX
Dimensions (W x L)9.6" x 9.6"
Peso de envío1.81 kg
Dimensiones del paquete229 × 229 × 51 mm

Preguntas sobre este artículo

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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