The LGA1155 socket on the Gigabyte Z77MX-D3H-TH is powered by a 6-phase VRM. It is wired to four DDR3 DIMM slots, supporting up to 32 GB of dual-channel DDR3-2400 MHz memory; and two PCI-Express 3.0 x16 slots (electrical x8/x8 when both are populated). Other expansion slots include a couple of PCI-Express 2.0 x1, wired to the PCH. All six SATA ports from the Z77 PCH (two SATA 6 Gb/s and four SATA 3 Gb/s) are assigned as internal ports.
Display connectivity, apart from the two Thunderbolt ports, includes one each of DVI, D-Sub, and HDMI. Other connectivity includes four USB 3.0 ports (two on the rear panel, two by headers), 8+2 channel HD audio, gigabit Ethernet, a number of USB 2.0 ports, and PS/2 mouse/keyboard combo port. The board is driven by dual-UEFI BIOS.
Source: TPU