Northbridge Chipset: VIA K8M800 Southbridge Chipset: VIA VT8237R Plus Memory Support: 2 X 1GB DDR2533 Slots: One AGP 4x/8x, three PCI 32-bit Onboard 1-Channel IDE , 4 Serial ATA 300Gbps Onboard 6 Channel Realtek ALC655 audio Onboard 10/100 Ethernet Onboard Graphic shared up to 64MB