Kingston KTD-PE426E/16G DIMM Memory Dell, Capacity 16GB, 1 Module, Speed 2666MHz (PC4-21300), ECC Unbuffered, CAS Latency 19, FF DDR4, 2R (Dual Rank), 288 Pin, Memory Voltage 1.2v. Kingston memory is designed, manufactured and rigorously tested to meet the exact specifications of each brand name system. It's guaranteed to be compatible and backed by a lifetime warranty and legendary Kingston reliability.