... /s 4 COREchipsetIntel 5520Expansion slot2×PCI-E x16 slot, wiring x8, 2×PCI-E x16 Gen 2 graphics card slot, max power 150w ... 64 bit/100MHz slot, support 3.3V card or general card,1×PCI 32bit/33MHz 5V slotram2GB DDR3, max 72GBHdd500GB SATADriver bracketInternal 2pcs ... 2.0 (2pcs front,6pcs back,3pcs internal),1 serial port,1 parallel port,2×PS/2,1×RJ-45softwareChassis antitheft switch, set ...