MSI Intel ATX DDR3 2400 Intel LGA 1155 Motherboards Z77A-G45 Thunderbolt Socket LGA 1155 Intel Z77 chipset ATX 3 PCI-E 3.0 (16/4/4, 8/8/4) and 4 PCI-E x1 1 Thunderbolt port, 1 HDMI and 1 VGA CrossFire and SLI ready Active Phase Switching OC Genie II and Click BIOS II