Gigabyte AMD 990FX SATA 6Gb/s USB 3.0 ATX DDR3 1600 AMD - AM3+ Motherboards GA-990FXA-UD5 R5 CPU socket: AM3+ Socket supports for AMD AM3+ FX processors; AMD AM3 Phenom II processors/ AMD Athlon II processors Memory Socket: 4 x DDR3 DIMM sockets supporting up to 32 GB of system memory Support for DDR3 2000(O.C.)/1866/1600/1333/1066 MHz memory modules Support for 2-Way/3-Way AMD Crossfire/NVIDIA SLI technology 8 x SATA 6Gb/s connectors 2 x eSATA 6Gb/s connectors on the back panel 14 USB 2.0/1.1 ports 4 USB 3.0/2.0 ports ATX Form Factor; 30.5cm x 24.4cm