16GB ( 1x 16GB Module ) DDR4 2933 MHz ( PC4-23400 ) DDR4 DIMM ( 288-Pin ) ECC RDIMM ( Registered DIMM ) 1.2V - DDR4 Standard Voltage Compatible Equivalent for HP P19041-B21, P00920-K21, P00920-B21, P03051-191, P14633-001, P19041-H21, P19254-001, P14117-B21, P03051-091, P00920-H21 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