The ASUS Z77-A is an Intel Z77 (LGA1155) ATX motherboard designed for 2nd/3rd Gen Intel Core processors. It features a 12+4 phase digital power design with ASUS DIGI+ VRM technology for stable overclocking, supporting Dual Channel DDR3 memory with XMP profiles up to 2200MHz(OC) across 4 DIMM slots. The board provides 2x PCIe 3.0 x16 slots (x16/x4 or x8/x8 mode) with ASUS Dual Intelligent Processors 3 technology, plus 1x PCIe 2.0 x16 (x4 mode) and 2x PCI slots for expansion. Storage options include 4x SATA 6Gbps ports (2x from Z77 chipset + 2x via ASMedia controller) and 2x SATA 3Gbps ports, supporting RAID 0/1/5/10. Networking features Gigabit Ethernet via Intel 82579V controller. Graphics outputs include HDMI, DVI-D and D-Sub with support for Intel HD Graphics. Additional highlights include USB 3.0 boost technology (4x rear ports via ASMedia controller), 8-channel HD audio with premium Japanese capacitors, UEFI BIOS with EZ Mode, and ASUS Fan Xpert for optimal cooling. The motherboard also features MemOK! for memory compatibility, AI Suite II for system tuning, and Q-Design for easier installation.