MSI Z390 Motherboards Now Support Up To 128GB of RAM | Tom's Hardware
Asus PRIME Z390-A ATX LGA1151 Motherboard (PRIME Z390-A) - PCPartPicker
CMS 32GB (2X16GB) DDR4 19200 2400MHZ Non ECC DIMM Memory Ram Upgrade Compatible with Asus/Asmobile® Prime X470-PRO, Prime Z390-A, Prime Z390-P, WS Z390 PRO - C114 at Amazon.com