MSI X99S GAMING 7 Socket 2011-3 7.1-Channel HD Audio ATX Motherboard Socket 2011-3 CPU (Max Support) i 7 Baseclock/ Hyper Transport 100 / 125 / 167 M Hz Chipset Intel X99 Express Chipset DDR4 Memory DDR4 2133/2200*/2400*/2600*/2666*/2750*/3000*/3110*/3333* (*OC) HMz Memory Channel Quad DIMM Slots 8 Max Memory (GB) 128 PCI-Ex 16 4 PCI-E Gen Gen 3 SATA Express 1 SATAIII 10 (*2x ports reserved for SATA Express) M.2 port 1 RAID 0/1/5/10 TPM (header) 1 LAN 10/100/1000*1 USB (Universal Serial Bus) 3.0 ports (Front) 4 USB (Universal Serial Bus) 3.0 ports (Rear) 8 USB (Universal Serial Bus) 2.0 ports (Front) 4 USB (Universal Serial Bus) 2.0 ports (Rear) 2 Audio ports (Rear) 5+ Optical SPDIF VGA Max Share Memory (MB) 1760 Direct X DX11 Form Factor ATX SLI Y 3-way SLI Y Cross Fire Y