64GB DDR4-2666 4RX4 LP ECC LRDIMMSuper Micro Supermicro 64GB DDR4 SDRAM Memory Module 64 GB (1 x 64GB) DDR4 2666 PC4 21300 DDR4 SDRAM 2666 MHz CL19 1. 20 V ECC 288 pin LRDIMM 5 Year Warranty VPN: MEM DR464L SL01 LR26 SKU: RSC853036 UPC: 672042262427 LRDIMM 64 GB of memory to maintain symmetry with processor and hard drive and bring out the ultimate computing experience 2666 MHz memory speed with CL19 latency for great multitasking capability DDR4 SDRAM interface multiplexes 2 bit