A-Tech 8GB Replacement for HP 759934-B21 - DDR4 2133MHz PC4-17000 ECC Registered RDIMM 2rx8 1.2v - Single Server Memory Ram Stick (759934-B21-ATC) at Amazon.com
Hynix DDR4-8 GB - DIMM 288-pin - 2133 MHz / PC4-17000 - CL15-1.2 V - Registered - ECC at Amazon.com
A-Tech 8GB Replacement for Samsung M391A1G43DB0-CPB - DDR4 2133MHz PC4-17000 ECC Unbuffered UDIMM 2rx8 1.2v - Single Server Memory Ram Stick (M391A1G43DB0-CPB-ATC) at Amazon.com