Patriots Signature Line DDR4 Non-ECC unbuffered memory delivers the quality reliability and performance expected for todays mainstream computer needs. This 4GB is designed to run at PC4-21300 (2666MHz) at CAS 19 latencytimings for better overall system responsiveness when using demanding application. Built using the highest quality components and hand tested Patriot ensures every module meets and exceeds industry standards to offer you ahassle-free plug-and-play memory upgrade. With free customer service and a lifetime warranty Patriots Signature Line DDR4 memory modules are the perfect option for any PC system build or upgrade for fasterperformanceFEATURES: Series: Signature Line Form Factor: 288-Pin Unbuffered Dual In-Line Memory Module (UDIMM) Technology : DDR4 Non-ECC Unbuffered 100% Tested RoHS Compliant Limited lifetime warrantyMemory Capacity4GB (1 x 4GB)Memory TypeDDR4Module TypeDIMMMemory SpeedDDR4-2666MHzPin Configuration288-pinRegistered/UnbufferedUnbufferedError CorrectionNon-ECCCL-tRCD-tRP-tRAS19-19-19-43Heat SinkNoWorking Voltage1.2V