Amazon.com: OWC 32GB (2 x 16GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S32P) : Everything Else
Samsung M386A4G40DM1-CRC 32GB DDR4 2400MHz Server Memory
32GB (1 x 32GB) DDR4 PC4-19200 2400MHz ECC Registered Server Memory