ASRock today unveiled the industry's first micro-ATX form-factor motherboard for AMD Ryzen Threadripper processors, the X399M Taichi. The board supports a full-featured Threadripper HEDT build. Drawing power from a combination of 24-pin ATX and 8-pin EPS power connectors, it uses an 8-phase VRM to power the CPU. MOSFETs of this VRM vent heat onto both a smaller primary heatsink, and a larger secondary heatsink, via a heat-pipe. The TR4 socket is wired to four DDR4 DIMM slots, supporting quad-channel DDR4 memory; and three PCI-Express 3.0 x16 slots (from which at least two run at full x16 bandwidth at all times).

Storage connectivity on the ASRock X399M Taichi includes three 32 Gb/s M.2 slots, one 32 Gb/s U.2 port, and eight SATA 6 Gb/s ports. Networking connectivity includes 802.11ac + Bluetooth 4.x WLAN, and two 1 GbE interfaces. USB connectivity includes eight USB 3.0 and two USB 3.1 (including a type-C) ports on the rear panel, and four USB 3.0 ports via headers. ASRock deployed its highest-grade onboard audio solution, which takes advantage of a 120 dBA SNR CODEC, audio-grade capacitors, and ground-layer isolation. The company will showcase this board at the 2018 International CES.