Single socket H3 (LGA 1150) supports Intel Xeon E3-1200 v3/v4, 4th/5th gen Up to 32GB DDR3 ECC/non-ECC 1600MHz UDIMM in 4 sockets Dual Gigabit Ethernet LAN ports (1 Intel® i217LM & 1 Intel i210AT 8 SATA3 (6Gbps) ports 2 PCI-E 3.0 x16 slots - function as 16/NA or 8/8, 3 PCI-E 2.0 x1, and 2 PCI 5V 32-bit slots 6 USB 3.0 (2 rear + 4 via headers) 10 USB 2.0 (4 rear + 6 via headers) HD Audio 7.1 channel connector by Realtek ALC1150