ASUS Releases the WS X299 Pro Motherboard
 

ASUS has now released the WS X299 Pro, a motherboard designed to be a workstation level platform for X299 processors. None of the features seem to stand out as making this motherboard a true 'workstation' motherboard, however, it does support multiple storage types (dual M.2 and a U.2), dual Intel network controllers, a COM port interface, and reinforced PCIe slots.

https://www.anandtech.com/show/11975...ro-motherboard