Number of Memory Slots: 4×240pin Memory Standard: DDR3 2000(OC) / 1866 / 1600 / 1333 / 1066 / 800 PCI Express 2.0 x16: 3 (x16, x16, x4) Onboard Video Chipset: None Audio Chipset: Realtek ALC892 Audio Channels: 8 Channels Max LAN Speed: 10/100/1000Mbps eSATA: 1 x eSATA 3Gb/s