MICRON 4GB DDR4 3200MHz PC4-25600 1.2V 1R x 16 SODIMM Laptop RAM Memory Module MTA4ATF51264HZ-3G2J1, OEM Package at Amazon.com
Timetec 4GB DDR4 2133MHz PC4-17000 Non-ECC Unbuffered 1.2V CL15 1Rx8 Single Rank 260 Pin SODIMM Laptop Notebook PC Computer Memory RAM Module Upgrade ( 4GB) at Amazon.com
Synology RAM DDR4 ECC SO-DIMM 4GB (D4ES01-4G) at Amazon.com
HP SmartBuy 4GB DDR4-2133 SODIMM (P1N53AT) at Amazon.com
Timetec 4GB DDR4 2400MHz PC4-19200 Non-ECC Unbuffered 1.2V CL17 1Rx8 Single Rank 260 Pin SODIMM Laptop Notebook PC Computer Memory RAM Module Upgrade ( 4GB) 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
Sаmsung 8GB KIT(2 x 4GB) DDR4 3200MHz PC4-25600 1.2V 1R x 16 260-Pin SODIMM Laptop RAM Memory Module (M471A5244CB0) at Amazon.com