CISCO UCS-ML-X64G4RS-H COMP 64GB DDR4-2666MHZ ECC QRX4 LRDIMMAddOn 64 GB DDR4 SDRAM Memory Module For Server 64 GB (1 x 64GB) DDR4 2666 PC4 21300 DDR4 SDRAM 2666 MHz Quad rank Memory 1. 20 V ECC 288 pin LRDIMM Lifetime Warranty VPN: UCS ML X64G4RS H AM SKU: RSC312065 UPC: 821455724187 64 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 2666 MHz of memory speed skillfully manages the variety of apps and computational tasks 288 pin pin DDR4 2666 PC4