Asus X99-WS/IPMI Desktop Motherboard - Intel X99 Chipset - Socket LGA 2011-v3 Number of Memory Slots: 8 PCI Express x16: 5 x PCI Express x16 Max LAN Speed: Yes CPU Type: Core i7 Xeon Maximum Memory Supported: 128GB Audio Channels: 7.1 Channels USB 1.1/2.0: 6 x USB 2.0 Dimensions (W x L): Width:12 Depth:10