The increase in leaks and teasers regarding X99 makes for some compelling reading. Shortly after showing off their X99S SLI PLUS on Facebook, a couple of Gaming 9 AC renders seem to have been posted as well. The X99S Gaming 9 AC, as the name suggests, represents the top member of MSI's gaming motherboard range if previous range identifiers are to be continued. Along with the 802.11ac support, the board looks like it will have eight DDR4 slots, five PCIe slots with SLI and Crossfire supported, an M.2 slot up to 2280, SATA Express, ten SATA 6 Gbps ports, eight USB 3.0 ports, upgraded audio and a Killer E2200 series network interface.