Number of Memory Slots: 4×240pin Memory Standard: DDR3 2000(O.C.)/1866/1600/1333/1066 PCI Express 2.0 x16: 4 (x16, x16, x4, x4) Onboard Video Chipset: None Audio Chipset: Realtek ALC889 Audio Channels: 8 Channels Max LAN Speed: 10/100/1000Mbps eSATA: 2 x eSATA 6Gb/s