INTEL MB BOXDQ35MPE 1333FSB DR2 800 Aud+Lan Raid SATA uATX Retail Form Factor mATX - Micro ATX Memory Slot 4 Slots 1 x PCI-E x16 ; 2 x PCI-E x1 ; 1 x PCI Max Bus Speed 1333 MHz Supported RAM Technology DDR2 800/667