Intel D925XEBC2 Socket 775 ATX w/Gigabit LAN, USB & Audio Intel 925XE chipset / Socket 775 / ATX Form Factor / Supports Hyper-Threading Technology 1066/800/533 MHz Front Side Bus / Supports up to 4 GB DDR2 400/533 MHz One (1) UDMA/33/66/100 IDE controller / One (1) floppy disk controller Four (4) Serial ATA (SATA) controllers / Intel Matrix Storage Technology for Serial ATA Intel High Definition Audio subsystem / 10/100/1000 Gigabit Ethernet LAN