Northbridge Chipset: P43 Chipset Southbridge Chipset: Intel® ICH9 Memory Support: 4 X 1/2GB DDR2667 Slots: One PCI Express x16, Three x1, Three PCI Dual-Core CPU Ready Onboard Single Channel IDE , 4 Serial ATA2300 Onboard 8 Channel ALC888 Realtek audio Onboard Marvel 8053 Gigabit Ethernet