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  6. Item#: N82E16813140163

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    ASRock Rack Server Motherboard EPYC4000D4U Micro-ATX Single Socket AMD EPYC 4005/4004 and AMD Ryzen 9000/8000/7000 series Processors

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    • Support ATX PSU or 12V DC-in
    • Micro-ATX (9.6" x 9.6")
    • Supports AMD EPYC 4005/4004 and AMD Ryzen 9000/8000/7000 series Processors
    • 4 DIMM slots (2DPC), supports DDR5 ECC/non-ECC UDIMM
    • 1 PCIe5.0 x16
    • 1 MCIO (PCIe5.0 x8)
    • 1 MCIO (2 PCIe5.0 x4)
    • Supports 2 M.2 (PCIe5.0 x4)
    • 2 SATA 6Gb/s
    • 2 RJ45 (1GbE) by Intel i210
    • 1 HDMI, 1 DisplayPort
    • Remote management (IPMI)
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    Specs
    Reviews (1)
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    Learn more about the ASRock Rack EPYC4000D4U

    Best Seller Ranking #11 in Server Motherboards
    Model
    Brand AsRock Rack
    Model EPYC4000D4U
    Supported CPU
    CPU Socket Type Socket AM5
    CPU Type AMD EPYC 4004 Series / AMD EPYC 4005 Series / AMD Ryzen 7000 Series / AMD Ryzen 8000 Series / AMD Ryzen 9000 Series
    Number of Processor Support 1
    CPU Features Thermal Design Power Up to 170W by proper cooling solution
    Memory
    Memory Slots 4 x DDR5 288-pin
    Memory Standard DDR5 5600
    Maximum Memory Supported 48GB
    ECC Supported Yes
    Expansion Slots
    PCI Express 5.0 x16 SLOT6: PCIe5.0 x16 [CPU]*

    *When installing AMD Ryzen 8000 Series (Phoenix) Processors, SLOT6 will support only PCIe4.0 x8
    *When installing AMD Ryzen 8000 Series (Phoenix2) Processors, SLOT6 will support only PCIe4.0 x4
    Storage Devices
    M.2 2 M-key (PCIe5.0 x4), supports 2280/2242 form factor [CPU]*

    *When installing AMD Ryzen 8000 Series (Phoenix) Processors, 2 M.2 will support only PCIe4.0 x4
    *When installing AMD Ryzen 8000 Series (Phoenix2) Processors, M2_1 will support only PCIe4.0 x2 and M2_2 will support only PCIe4.0 x4
    Onboard LAN
    LAN Chipset Intel I210
    Max LAN Speed 2 x 1Gbps
    Rear Panel Ports
    Back I/O Ports 1 x COM (Serial Port) / 1 x D-Sub / 1 x DisplayPort / 1 x HDMI / 2 x LAN (RJ45) / 2 x USB 3.2 Gen 1 Type-A
    Onboard Ports
    Other Connectors Power Connector: 1 (24-pin, ATX main power), 2 (8-pin, ATX 12V) support 12V DC-in
    Other Power Connectors: 1 (4-pin) for HDD power
    Auxiliary Panel Header: 1 (18-pin): chassis intrusion, system fault LED, LAN activity LED
    System Panel: 1 (9-pin): power switch, reset switch, system power LED, HDD activity LED
    Speaker Header: 1
    Buzzer: 1
    Fan Header: 7 (6-pin)
    TPM Header: 1 (13-pin, SPI)
    SMBus header: 1
    PMBus header: 1
    IPMB Header: 1
    Clear CMOS: 1
    Others: 1 SD card, 1 header (3-pin, 80 debug port)
    Features
    BIOS Feature AMI UEFI BIOS; 256Mb (32MB) SPI Flash ROM
    Plug and Play, ACPI 6.4 compliance wake up events, SMBIOS 3.5
    Dimensions
    Form Factor Micro ATX
    Dimensions (W x L) 9.6" x 9.6"
    Additional Information
    First Listed on Newegg September 26, 2025

    Warranty & Returns

    Warranty, Returns, And Additional Information

    Warranty

    • Limited Warranty period (parts): 3 years
    • Limited Warranty period (labor): 3 years
    • Read full details

    Return Policies

      We want to ensure your holiday shopping this year is hassle-free. That’s why we’re automatically extending our return policies on almost every product! For purchases placed between November 1st, 2026 and December 31, 2026 you will have until January 31, 2027 to return your product.

    • Return for refund until: January 31, 2027
    • Return for replacement until: January 31, 2027
    • This item is covered by Newegg.com's Extended Holiday Return Policy.
    • Read full return policy for details.

    Manufacturer Contact Info

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    The ASRock Rack EPYC4000D4U is a Micro-ATX server motherboard for one AMD EPYC 4004/4005 or Ryzen 7000/8000/9000 processor, suited to compact servers that need ECC memory support and remote IPMI management.

    Recommended For

    • Homelab builders running a compact Proxmox or other virtualization server who want IPMI for remote administration and ECC UDIMM support in a Micro-ATX system.
    • Small-business and edge-server builders who need a single-socket platform for web, application, or virtualization workloads and value remote management in a tower or rack-compatible Micro-ATX build.
    • System integrators adapting a server to an existing Micro-ATX chassis who need flexible PCIe and MCIO connectivity, provided they plan around shared lanes before choosing cards and drives.
    • Builders of compact NVMe-focused servers who need a small number of local drives and can use MCIO for additional storage rather than relying on a large native SATA array.

    Spec Summary

    AttributeValue
    Best ForSingle-processor server or workstation builds using a supported AMD EPYC 4004/4005 or Ryzen 7000/8000/9000 processor, with support for ECC memory
    Processor And SocketSingle Socket AM5 supporting AMD EPYC 4004 and 4005 Series and AMD Ryzen 7000, 8000, and 9000 Series processors; supports CPUs up to 170W TDP with an appropriate cooling solution
    Memory ConfigurationFour DDR5 288-pin slots, DDR5 5600, up to 48GB; supports ECC memory
    PCIe And M.2 ExpansionOne PCIe 5.0 x16 slot and two M-key M.2 sockets supporting 2242 and 2280 drives. With Ryzen 8000 Phoenix processors, the slot operates at PCIe 4.0 x8 and both M.2 sockets at PCIe 4.0 x4; with Phoenix2, the slot operates at PCIe 4.0 x4 and M.2_1 at PCIe 4.0 x2 while M.2_2 operates at PCIe 4.0 x4
    Storage ConnectivityOne SATA port
    NetworkingTwo Intel I210 Gigabit Ethernet ports, each rated at up to 1Gbps
    Rear I/OHDMI and DisplayPort video outputs, one D-Sub port, one COM serial port, two RJ45 LAN ports, and two USB 3.2 Gen 1 Type-A ports
    Power And CoolingSupports a 24-pin ATX main power connector and two 8-pin ATX 12V connectors, with 12V DC-in support; includes a 4-pin HDD power connector and seven 6-pin fan headers
    Management And Internal HeadersIncludes auxiliary and system panel headers, TPM (SPI), SMBus, PMBus and IPMB headers, plus speaker and buzzer connections, Clear CMOS, an SD card connector, and an 80 debug port header
    Firmware And ComplianceAMI UEFI BIOS with 256Mb (32MB) SPI Flash ROM; supports Plug and Play, ACPI 6.4 wake events, and SMBIOS 3.5
    Form Factor And DimensionsMicro-ATX, 9.6 × 9.6 inches
    Model IdentifiersASRock Rack EPYC4000D4U