AMD Threadripper TR4 8×DDR4 E-ATX 2×M.2 RJ45 For ASUS PRIME X399-A Motherboard | eBay
Socket TR4 - Wikipedia
Asus ROG Strix X399 E GAMING Desktop Motherboard AMD Chipset Socket TR4 128 GB DDR4 SDRAM Maximum RAM UDIMM DIMM 8 x Memory Slots Gigabit Ethernet Wireless LAN 10 x USB 3.1
ASRock X399 TAICHI sTR4 SATA 6Gb/s USB 3.1/3.0 ATX AMD Motherboard : Everything Else - Amazon.com
Amazon.com: ASUS PRIME X399-A AMD Threadripper TR4 DDR4 M.2 U.2 X 399 EATX HEDT Motherboard with USB 3.1 Gen2, AURA Sync RGB Lighting and 3D Printing Mounts : Everything Else