Toms Hardware reviewed the Supermicro C9Z490-PGW
A quote from the article:
The Supermicro C9Z490-PGW is a good (though expensive) option to build a Z490-based system. It performs well and offers users 10 GbE, PXE boot functionality, four full-length x8-capable PCIe slots, stable power delivery and more.Supermicro C9Z490-PGW Review