16GB 2666MHZ DDR4 ECC CL19 DIMM 2RX8 HYNIX DKingston 16GB DDR4 SDRAM Memory Module 16 GB DDR4 2666 PC4 21300 DDR4 SDRAM 2666 MHz CL19 1. 20 V ECC Unbuffered 288 pin DIMM Lifetime Warranty VPN: KSM26ED8 16HD SKU: RSC903265 UPC: 740617312188 DIMM 16 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 2666 MHz of memory speed with Unbuffered signal skillfully manages the variety of apps and computational tasks DDR4 SDRAM interface