KINGSTON Kingston - DDR4 - module - 64 GB - LRDIMM 288-pin - 2666 MHz / PC4-21300 - CL19 - 1.2 V - Load-Reduced - ECC - for Lenovo ThinkAgile HX2320 Appliance, VX3320 Appliance, VX5520 Appliance, VX7520 Appliance KTL-TS426LQ/64G