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
AMD Threadripper X399 motherboards: Specs, prices, features | PCWorld
ASUS PRIME X399-A sTR4 Extended ATX AMD Motherboard - Newegg.com
All the best mini-ITX motherboards for Ryzen, Threadripper, Coffee Lake and Skylake-X - YouTube