Silicon Power Gaming DDR4 16GB (8GBx2) 3200MHz (PC4 25600) 288-pin CL16 1.35V UDIMM Desktop Memory Module RAM - Low Voltage at Amazon.com
Kingston 8GB DDR4 SDRAM Memory Module at Amazon.com
Amazon.com: OWC 8GB (2 x 4GB) PC19200 DDR4 2400MHz SO-DIMMs Memory Compatible with Mac Mini (Late 2018), 27" and 21.5" iMac (Mid 2017), and Compatible PCs (OWC2400DDR4S08P) : Everything Else
HP 8GB DDR4 SDRAM Memory Module at Amazon.com
SK Hynix 8GB DDR4 1Rx8 PC4-2400T HMA81GS6AFR8N-UH SO-DIMM Laptop RAM Memory at Amazon.com
Kingston 8GB 288-Pin DDR4 SDRAM DDR4 2133 (PC4 17000) Desktop Memory Model KVR21N15D8/8. at Amazon.com