64GB ( 1x 64GB Module ) DDR4 2933 MHz ( PC4-23400 ) DDR4 DIMM ( 288-Pin ) ECC LRDIMM ( Load Reduced DIMM ) 1.2V - DDR4 Standard Voltage Compatible Equivalent for HP P19044-H21, P19044-S21, P00926-H21, P03054-C91, P12403-B21, P13211-001, P00926-B21, P14121-B21, P19044-K21 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