• AMD AM5 | Ryzen 7000 Series | Up to 170W TDP — Micro-ATX server motherboard for AMD Ryzen 7000 processors with full high-TDP workstation support
• 4× DDR5 ECC/Non-ECC UDIMM Slots — Up to 128GB DDR5-5200 (1DPC) / DDR5-3600 (2DPC) with ECC for improved data integrity
• PCIe 5.0 x16 + PCIe 5.0 x4 + PCIe 4.0 x1 — Full-bandwidth expansion for GPU, NVMe HBAs, and accelerator cards
• 2× M.2 Slots (PCIe 5.0 x4 + PCIe 4.0 x4) — Dual NVMe support for fast OS boot and high-speed storage
• 4× SATA III 6Gb/s — Direct storage connectivity for HDDs and SSDs
• Dual 1GbE (Intel i210) — Reliable dual Gigabit Ethernet for server network connectivity and teaming
• IPMI Remote Management — Full out-of-band server management including KVM, power control, and hardware monitoring
• Micro-ATX Form Factor (9.6"×9.6") — Fits standard Micro-ATX server chassis and compact workstation cases

The ASRock Rack B650D4U is a Micro-ATX server motherboard built for AMD Ryzen 7000 series (AM5) processors, delivering workstation-class PCIe 5.0 connectivity, DDR5 ECC memory support, and IPMI remote management in a compact 9.6"×9.6" form factor. Supporting CPUs up to 170W TDP — including Ryzen 9 7950X and 7900X — it handles demanding server workloads including virtualization, NAS hosting, content creation, and always-on server applications. DDR5 ECC UDIMM support across four DIMM slots provides error correction for mission-critical deployments.

PCIe 5.0 x16 and PCIe 5.0 x4 expansion slots deliver next-generation bandwidth for GPUs, NVMe HBAs, and AI accelerators, while dual M.2 slots (PCIe 5.0 + PCIe 4.0) support ultra-fast NVMe storage. Dual Intel i210 1GbE NICs provide reliable network connectivity with teaming support, and IPMI out-of-band management enables remote administration without physical access.

Ideal For

• Home Lab & Small Server Builds — Compact Micro-ATX AM5 server board with IPMI for home lab environments
• Workstation Builds — High-TDP Ryzen 7000 support with PCIe 5.0 for GPU and NVMe workstations
• Virtualization Servers — AM5 + DDR5 ECC for Proxmox, VMware ESXi, and Hyper-V deployments
• NAS & Storage Servers — 4× SATA + dual M.2 + PCIe 5.0 for high-performance storage builds
• AI & GPU Server Builds — PCIe 5.0 x16 for GPU or accelerator cards on an AM5 Ryzen platform

Specifications

• MPN — B650D4U
• SKU — CCB650D4U
• Form Factor — Micro-ATX (9.6" × 9.6")
• Socket — AM5 (AMD Ryzen 7000 Series)
• Max CPU TDP — 170W
• Memory — 4× DDR5 ECC/Non-ECC UDIMM (Max 128GB)
• Memory Speed — DDR5-5200 (1DPC) / DDR5-3600 (2DPC)
• PCIe — 1× PCIe 5.0 x16, 1× PCIe 5.0 x4, 1× PCIe 4.0 x1
• M.2 — 1× PCIe 5.0 x4 (M Key), 1× PCIe 4.0 x4 (M Key)
• Storage — 4× SATA III 6Gb/s
• LAN — 2× 1GbE RJ-45 (Intel i210)
• Remote Management — IPMI (out-of-band)
• Display — HDMI