Model Brand GIGABYTE Model B550M DS3H R2 Supported CPU CPU Socket Type AM4 CPU Type Ryzen 3000 Series / Ryzen 3000G Series / Ryzen 4000G Series / Ryzen 5000 Series / Ryzen 5000G Series Chipsets Chipset AMD B550 Memory Number of Memory Slots 4x288pin (DDR5) Memory Standard DDR4 4733(O.C.) / 4600(O.C.) / 4400(O.C.) / 4266(O.C.) / 4133(O.C.) / 4000(O.C.) / 3866(O.C.) / 3733(O.C.) / 3600(O.C.) / 3466(O.C) / 3400(O.C.) / 3200 / 2933 / 2667 / 2400 / 2133 Maximum Memory Supported 128GB Channel Supported Dual Channel ECC Supported Yes Buffer Supported Un-buffered Memory Feature Support for ECC Un-buffered DIMM 1Rx8/2Rx8 memory modules Support for non-ECC Un-buffered DIMM 1Rx8/2Rx8/1Rx16 memory modules Support for Extreme Memory Profile (XMP) memory modules Expansion Slots PCI Express 4.0 x16 1 x PCI Express x16 slot (PCIEX16), integrated in the CPU: AMD Ryzen 5000/3000 Series Processors support PCIe 4.0 x16 mode AMD Ryzen 5000 G/4000 G/3000 G Series Processors support PCIe 3.0×16 mode * The PCIEX16 slot can only support a graphics card or an NVMe SSD. If only one graphics card is to be installed, be sure to install it in the PCIEX16 slot. PCI Express x4 1 x PCI Express x16 slot (PCIEX4), supporting PCIe 3.0 and running at x4 PCI Express x1 1 x PCI Express x1 slot (PCIEX1), supporting PCIe 3.0 and running at x1 Storage Devices Serial ATA (SATA) 4 x SATA 6Gb/s M.2 1 x M.2 (Support PCIe 3.0 x4) SATA RAID RAID 0, RAID 1, and RAID 10 support for NVMe SSD storage devices RAID 0, RAID 1, and RAID 10 support for SATA storage devices Onboard Audio Audio Chipset Realtek ALC1220 CODEC Audio Channels 7.1 Channels Onboard LAN Max LAN Speed 1Gbps Wireless LAN N/A Bluetooth N/A Rear Panel Ports Back I/O Ports 2 x USB 2.0/1.1 ports 1 x PS/2 keyboard/mouse port 1 x HDMI port (Note) 1 x DisplayPort (Note) 4 x USB 3.2 Gen 1 ports 1 x RJ-45 port 3 x audio jacks Internal I/O Connectors Onboard USB 1 x USB Type-C header, with USB 3.2 Gen 1 support 1 x USB 3.2 Gen 1 header 1 x USB 2.0/1.1 header Other Connectors 1 x CPU fan header 2 x system fan headers 2 x addressable LED strip headers 2 x RGB LED strip headers 1 x CPU cooler LED strip/RGB LED strip header 2 x M.2 Socket 3 connectors 4 x SATA 6Gb/s connectors 1 x front panel header 1 x front panel audio header 1 x Trusted Platform Module (TPM) header (2×6 pin, for the GC-TPM2.0_S module only) 1 x serial port header 1 x Clear CMOS jumper 1 x Q-Flash Plus button Physical Spec Form Factor Micro ATX Dimensions (W x L) 9.6″ x 9.6″ Power Pin 1 x 24-pin ATX main power connector 1 x 8-pin ATX 12V power connector Software Feature BIOS Feature 1 x 128 Mbit flash Use of licensed AMI UEFI BIOS PnP 1.0a, DMI 2.7, WfM 2.0, SM BIOS 2.7, ACPI 5.0 Windows 11 Supported Features Features Support for APP Center – @BIOS – EasyTune – RGB Fusion – Smart Backup – System Information Viewer Support for Q-Flash Plus Support for Q-Flash
