GA-B85M-D3H-A is a micro ATX motherboard manufactured by Gigabyte Technology Co., Ltd. It supports 4th generation Intel Core processors and Intel Pentium/Celeron processors for socket LGA1150. The motherboard is based on the Intel B85 chipset and features four DIMM slots for DDR3 memory, one PCIe 3.0 x16 slot, two PCIe 2.0 x1 slots, and one PCIe 2.0 x4 slot. It also includes four SATA III 6Gbps connectors for additional storage, eight USB 2.0 ports, and four USB 3.0 ports. Additionally, the motherboard features Realtek ALC887 audio codec and Realtek GbE LAN chip for network connectivity. The motherboard is designed for home and office use and provides stable performance with a range of connectivity options in a smaller form factor.