Number of Memory Slots: 4×240pin Memory Standard: DDR3 800 / 1066 / 1333 / 1600 / 1866 / 2133* (OC) PCI Express 2.0 x16: 2 (x16, x4) Onboard Video Chipset: None Audio Chipset: Realtek ALC892 Audio Channels: 8 Channels Max LAN Speed: 10/100/1000Mbps South Bridge: AMD SB950