Alternate color or configuration shown Asrock B550D4M motherboard AMD B550 Socket AM4 ATX Asrock B550D4M. Processor manufacturer: AMD, Processor socket: Socket AM4, Compatible processor series: AMD Ryzen™ 3, AMD Ryzen™ 5. Supported memory types: DDR4-SDRAM, Maximum internal memory: 32 GB, Memory slots type: DIMM. Supported storage drive interfaces: M.2, SATA III, RAID levels: 0, 1, 10. On-board graphics card model: Aspeed AST2500. LAN controller: Intel I210 Manufacturer: Asrock SKU: 6816898 Manufacturer part number: B550D4M GTIN: 4710483936852 Price: $339.61 Qty: Add to cart Custom wishlist OK Add to wishlist Add to compare list Email a friend ATX (12"x 9.6")Support AMD Ryzen 5000 Series Desktop Processors4 DIMM slots (2DPC), supports DDR4 ECC/non-ECC UDIMM1 PCIe4.0 x8, 1 PCIe4.0 x41 M.2 (PCIe3.0 x4 or SATA 6Gb/s)1 OCP 2.0 Mezzanine connector A (PCIe3.0 x8)2 RJ45 (1GbE) by Intel® i2107 SATA 6Gb/sHDMIRemote management (IPMI) Overview Specifications Contact Us ATX (12"x 9.6")Support AMD Ryzen 5000 Series Desktop Processors4 DIMM slots (2DPC), supports DDR4 ECC/non-ECC UDIMM1 PCIe4.0 x8, 1 PCIe4.0 x41 M.2 (PCIe3.0 x4 or SATA 6Gb/s)1 OCP 2.0 Mezzanine connector A (PCIe3.0 x8)2 RJ45 (1GbE) by Intel® i2107 SATA 6Gb/sHDMIRemote management (IPMI) Products specifications Attribute name Attribute value PC health monitoring CPU, Fan, Voltage Number of SATA III connectors 7 PCI Express x4 (Gen 4.x) slots 1 Width 12" Depth 9.61" Supported storage drive interfaces M.2, SATA III Maximum internal memory 32 GB Motherboard chipset AMD B550 Memory slots type DIMM BIOS type UEFI AMI Motherboard form factor ATX LAN controller Intel I210 Non-ECC Y Supported memory types DDR4-SDRAM Number of memory slots 4 ATX Power connector (24-pin) Y Motherboard chipset family AMD BIOS memory size 256 Mbit EPS power connector (8-pin) Y Maximum number of SMP processors 1 ACPI version 5.1 IPMI LAN (RJ-45) port Y TPM connector Y System Management BIOS (SMBIOS) version 2.3 USB 3.2 Gen 1 (3.1 Gen 1) connectors 1 USB 3.2 Gen 2 (3.1 Gen 2) Type-A ports quantity 2 Ports & interfaces Ethernet LAN (RJ-45) ports 3 HDMI ports quantity 1 Serial ports quantity 1 VGA (D-Sub) ports quantity 1 USB 3.2 Gen 1 (3.1 Gen 1) Type-A ports quantity 2 Operational conditions Operating temperature (T-T) 10 - 35 °C Storage temperature (T-T) -40 - 70 °C Operating relative humidity (H-H) 20 - 90 % Features Component for Server ECC Y Memory voltage 1.2 V Performance Compatible processor series AMD Ryzen™ 3, AMD Ryzen™ 5 Ethernet LAN Y Storage RAID support Y RAID levels 0, 1, 10 Network Wi-Fi N Processor Processor manufacturer AMD Processor socket Socket AM4 On-board graphics card model Aspeed AST2500 Internal I/O USB 2.0 connectors 1