GIGABYTE B550M DS3H AC Wifi DDR4 AMD Motherboard

The Gigabyte B550M DS3H AC is a Micro ATX motherboard built on the AMD B550 chipset and designed for AMD Socket AM4 processors. It supports AMD Ryzen 5000 Series, 3rd Gen Ryzen, and 3rd Gen Ryzen with Radeon Graphics CPUs, making it a capable platform for mainstream AMD desktop builds that do not require an upgrade to a newer socket. Memory support is generous for a board in this class. Four DDR4 DIMM slots accommodate up to 128 GB of system memory (up to 32 GB per DIMM), with dual-channel architecture and compatibility with XMP profiles. Both ECC and non-ECC unbuffered modules are supported, giving this board added flexibility for light workstation use. Storage options include two M.2 connectors. The primary slot (M2A_CPU) connects directly to the CPU and supports PCIe 4.0 x4 NVMe drives when paired with a 3rd Gen Ryzen processor, enabling high-bandwidth SSD performance. The second slot (M2B_SB) is chipset-connected and supports PCIe 3.0 x2 or SATA drives. Four SATA 6 Gb/s ports round out the storage interface and support RAID 0, 1, and 10 configurations. Networking is handled by two separate solutions: an Intel Wi-Fi AC 3168 module supporting 802.11a/b/g/n/ac on 2.4 GHz and 5 GHz dual-band frequencies with Bluetooth 4.2, and a Realtek Gigabit Ethernet controller (1000/100 Mbit). The Wi-Fi module supports up to 433 Mbps throughput under the 802.11ac standard; actual speeds will vary by environment. Display output relies on the integrated graphics of compatible APUs. The board provides one HDMI port (up to 4096x2160 at 60 Hz, HDMI 2.1, HDCP 2.3, HDR) and one DVI-D port (up to 1920x1200 at 60 Hz). Note that the DVI-D port does not support D-Sub adapters. Audio is delivered through a Realtek High Definition Audio CODEC supporting 2/4/5.1/7.1-channel output via three rear audio jacks. The board incorporates dedicated high-quality audio capacitors and a PCB-level audio noise guard that physically separates analog audio components from digital circuitry. Expansion slots include one PCIe x16 slot (CPU-connected, PCIe 4.0 x16 with 3rd Gen Ryzen / PCIe 3.0 x16 with Ryzen APUs), one PCIe x16 slot wired at x4 (chipset, PCIe 3.0), and one PCIe x1 slot (chipset, PCIe 3.0). USB connectivity consists of four USB 3.2 Gen 1 Type-A ports and four USB 2.0 ports on the rear panel, plus internal headers for two additional USB 3.2 Gen 1 and two USB 2.0 ports. The board features Gigabyte's Smart Fan 5 system with multiple temperature sensor inputs, hybrid PWM/voltage fan headers, and FAN STOP functionality. RGB Fusion 2.0 manages onboard and external lighting via two addressable LED (5 V) headers and two standard RGB (12 V) headers, supporting up to 300 individually addressable LEDs on external strips. BIOS updates can be performed without an installed CPU, memory, or GPU using the Q-Flash Plus button on the rear panel. The board ships with a 3-year warranty. Verified Specifications: - Form Factor: Micro ATX, 24.4 cm x 24.4 cm - Socket: AMD AM4 - Chipset: AMD B550 - CPU Support: AMD Ryzen 5000 Series; 3rd Gen Ryzen; 3rd Gen Ryzen with Radeon Graphics - Memory: 4x DDR4 DIMM, max 128 GB, dual-channel, ECC/non-ECC unbuffered, XMP - Primary M.2: PCIe 4.0 x4 / SATA (CPU-connected); types 2242/2260/2280/22110 - Secondary M.2: PCIe 3.0 x2 / SATA (chipset-connected); types 2242/2260/2280 - SATA: 4x SATA 6 Gb/s with RAID 0/1/10 - Wi-Fi: Intel Wi-Fi AC 3168, 802.11a/b/g/n/ac, 2.4/5 GHz, up to 433 Mbps - Bluetooth: 4.2 - LAN: Realtek GbE (1000/100 Mbit) - Audio: Realtek HD Audio CODEC, up to 7.1-channel - Video Out: 1x HDMI 2.1 (4K@60Hz), 1x DVI-D (1920x1200@60Hz) - USB (Rear): 4x USB 3.2 Gen 1, 4x USB 2.0 - PCIe: 1x x16 (CPU, PCIe 4.0), 1x x16 (chipset, PCIe 3.0 x4), 1x x1 (chipset, PCIe 3.0) - BIOS: AMI UEFI, 256 Mbit flash, Q-Flash Plus - Warranty: 3 Years