Number of Memory Slots: 4×240pin Memory Standard: DDR3 2250(O.C.) / 1866 / 1600 / 1333 / 1066 PCI Express 2.0 x16: 2 (x16, x4) Onboard Video Chipset: None Audio Chipset: VIA VT1708S Audio Channels: 8 Channels Max LAN Speed: 10/100/1000Mbps Maximum Memory Supported: 64GB