32GB ( 1x 32GB Module ) DDR4 2133 MHz ( PC4-17000 ) DDR4 DIMM ( 288-Pin ) ECC RDIMM ( Registered DIMM ) 1.2V - DDR4 Standard Voltage Compatible Equivalent for Kingston KTD-PE421/32G, KVR21R15D4/32, HP21D4R5D4MAM-32, KTH-PL421/32G 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