GIGABYTE B660M D2H DDR4 Intel Motherboard

The Gigabyte B660M D2H DDR4 is a Micro ATX motherboard designed around Intel's B660 Express chipset and the LGA1700 socket, making it a solid foundation for 12th Generation Intel Core, Pentium Gold, and Celeron processor builds. At 22.5 cm × 24.4 cm, its compact footprint fits a wide range of mid-tower and small-form-factor cases while still delivering a feature set suited to both everyday computing and gaming workloads. Memory support is a highlight: two DDR4 DIMM slots accommodate up to 64 GB of system memory (32 GB per slot) in a dual-channel configuration. Native speeds run from 2133 MHz up to 3200 MHz, with XMP profiles supported all the way to DDR4-5333 (O.C.), giving enthusiasts significant headroom for memory tuning without manual voltage adjustments. Storage options are equally capable. Two M.2 Socket 3 connectors — one routed through the CPU and one through the chipset — both support PCIe 4.0 x4 NVMe SSDs in 2260 and 2280 form factors. Four SATA 6 Gb/s ports complement the M.2 slots, and the board supports RAID 0, 1, 5, and 10 configurations across those SATA ports. Networking is handled by a Realtek 2.5GbE LAN chip capable of 2.5 Gbps, 1 Gbps, and 100 Mbps operation, paired with the Realtek Gaming LAN Bandwidth Control Utility for traffic prioritisation. Audio uses a Realtek High Definition Audio CODEC with 2/4/5.1/7.1-channel output, high-quality audio capacitors, an audio noise guard that isolates sensitive analog traces at PCB level, and S/PDIF out support. The single PCIe x16 slot runs at full x16 bandwidth under the PCIe 4.0 standard, while two PCIe 3.0 x1 slots offer expansion flexibility. Display output is provided via one HDMI port (HDMI 2.1, HDCP 2.3, up to 4096×2160 @ 60 Hz) and one D-Sub port (up to 1920×1200 @ 60 Hz) for systems using Intel integrated graphics. USB connectivity spans 6× USB 3.2 Gen 1 ports and 4× USB 2.0/1.1 ports across the rear panel and internal headers, plus additional USB 2.0 ports via internal headers using USB 2.0 hubs. RGB Fusion 2.0 provides one addressable LED strip header and one standard RGB LED strip header for lighting customisation. Smart Fan 6 with FAN STOP enables temperature-based fan speed control across the CPU and system fan headers, each rated for up to 2 A / 12 V. The UEFI AMI BIOS features Q-Flash Plus — allowing BIOS updates via a USB drive without installing the CPU, memory, or GPU — alongside EasyTune for in-Windows overclocking and voltage management. Key Specifications: • Socket: LGA1700 | Chipset: Intel B660 Express • Form Factor: Micro ATX, 22.5 cm × 24.4 cm • Memory: 2× DDR4 DIMM, up to 64 GB, DDR4-2133 to DDR4-3200 native; XMP up to DDR4-5333 (O.C.) • M.2: 2× PCIe 4.0 x4 (2260/2280) • SATA: 4× 6 Gb/s; RAID 0/1/5/10 • PCIe: 1× PCIe 4.0 x16, 2× PCIe 3.0 x1 • LAN: Realtek 2.5GbE • Audio: Realtek HD Audio, 7.1-channel, S/PDIF out • Display: 1× HDMI 2.1 (4K@60 Hz), 1× D-Sub • USB (rear): 4× USB 3.2 Gen 1, 2× USB 2.0 • BIOS: AMI UEFI, Q-Flash Plus, 256 Mbit flash • OS Support: Windows 11 64-bit, Windows 10 64-bit