ASUS has officially launched the X99M-WS micro-ATX motherboard that is based on the Intel X99 Express chipset. We first got a look at this motherboard back in June at Computex. The “WS” means that this is a workstation-class motherboard and ASUS claims that it is the most feature-rich X99-based product in the micro-ATX form factor.
The board supports Intel’s Core i7 “Haswell-E” processors as well as certain Xeon E5 v3 series models. The board features an 8-phase VRM for the CPU and a 2+2 phase VRM for the memory. Power to the board comes from a combination of 24-pin ATX, two 8-pin EPS, and 6-pin PCI-Express power connections. There are four DDR4 DIMM slots, which support up to 64GB of quad-channel DDR4 memory.
As far as expansion slots go you have three PCI-Express 3.0 x16 slots (x16/x16/x8 or x8/x8/x8 when an i7-5820 is used), and a single PCI-Express x1. For storage there are eight SATA 6GB/s ports and a single M.2 32 Gb/s slot. There are dual Intel I210 Gigabit Ethernet controllers as well as 802.11ac + Bluetooth 4.0. USB connectivity includes two USB 3.1 ports (type-A), six USB 3.0 ports, and a number of USB 2.0 ports. The board also makes use of ASUS’s CrystalSound 2 and has an optional PIKE SAS module.