16GB ( 1x 16GB Module ) DDR4 2666 MHz ( PC4-21300 ) DDR4 DIMM ( 288-Pin ) ECC RDIMM ( Registered DIMM ) 1.2V - DDR4 Standard Voltage Compatible Equivalent for Kingston KSM26RS4/16HDI, KSM26RS4/16HAI, KSM26RS4/16MRR, KSM26RS4/16MEI, KTH-PL426/16G, KTL-TS426/16G, KSM26RS4/16HCI 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