16GB ( 1x 16GB Module ) DDR4 2133 MHz ( PC4-17000 ) DDR4 DIMM ( 288-Pin ) ECC RDIMM ( Registered DIMM ) 1.2V - DDR4 Standard Voltage Compatible Equivalent for HP 784672-001, 726719-S21, 753221-B21, 753223-B21, 807818-B21, 810745-B21, 753221-S21, J9P83AT, 726720-S21, 752369-081 High performance Memory RAM upgrade designed for Server/Workstation Systems All modules undergo quality assurance testing to ensure dependable and reliable performance Please verify the supported memory (RAM) specifications of your system prior to purchase to ensure compatibility A-Tech provides a Lifetime Warranty for all orders & offers complimentary United States based Tech Support before, during, & after your purchase