Plug and play, 2 pcs ram/ intel processor cpu supports intel pentium 4/pentium d/core tm2 duo/ pentium dual-core e2xxx or celeron 4xxx/wolfdale cpu fsb 533/mhz chipset northbridge: intel g31 chipset south bridge: intel ich7 chipset memory ddr2 533/667/800 sdram (4gb max) 2 ddr2 dimms (240pin/1.8v) lan supports realtek rtl8100c or rtl8103el 10/100mb/s audio chip integrated by realtek alc662, supports 5.1-channel audio-out vista premium compliance ide port supports ultra dma 66/100 mode, supports pio, bus master operation mode sata supports, 2 sata devices parallel port supporting spp/epp/ecp mode 1 ps/2 mouse port 1 ps/2 keyboard port 1 serial port(com1) 1 vga port 4 usb 2.0 ports 1 rj-45 lan jack 3 flexible audio jacks on-board pin headers