Patriot Memorys Signature Line DDR4 SODIMM memory delivers the quality, reliability and performance expected for todays notebook needs. This 8GB module is designed to run at PC4-17000 (2133MHz) at CAS 15 latency timings. Built using specific build-of-materials (BOMs) we ensure that every module meets and exceeds industry standards: offering you a hassle-free upgrade.We certify every component that goes into our modules, including the modules themselves, which must pass strict standards to ensure compatibility, quality and reliability. With free customer service and a lifetime warranty, Patriot Memorys Signature memory modules are a perfect system upgrade option.