8GB ( 1x 8GB Module ) DDR4 2400 MHz ( PC4-19200 ) DDR4 SODIMM ( 260-Pin ) ECC SODIMM ( ECC Unbuffered SO-DIMM ) 1.2V - DDR4 Standard Voltage Compatible Equivalent for HP 862398-852, Y7B56AT, Y7B56AA, 863951-B21, 1CA79AT 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