Kingston KCS-UC426/32G DIMM Memory Cisco, Capacity 32GB, 1 Module, Speed 2666MHz (PC4-21300), ECC Registered, CAS Latency 19, FF DDR4, 2R (Dual Rank), 288 Pin, Memory Voltage 1.2v. Kingston Cisco KCS-UC426/32G 32GB DDR4 2666Mhz ECC Registered Memory RAM DIMM.