About this item DDR4 16GB 2133MHz UDIMM RAM PC4-17000, DDR4 2133MHz, Unbuffered, Dual Rank, Non ECC, 1.2V CL15, apply for AMD, Intel, Mac system. Advanced Chips All DDR4 16GB RAM are from ron, Hynix, Kingston, ELPIDA, Nanya and high quality ram memory module. Professional company, high-quality materials, upgrade designed for DDR4 UDIMM compatible desktop. Increases System Performance PC4 16GB ram will speed up loading times, improve system responsiveness, and increase your system's ability to handle greater workloads. Warm tips: Please make sure your desktop model meets 1x16GB 2133 17000 Kit. Stable and Durable 16GB DDR4-2133MHz DIMM RAM, 100% tested for stability, durability and compatibility. All PC4-17000 modules undergo quality urance testing to ensure dependable and reliable performance. Lifetime Service Lifetime warranty, free technical support. All memory upgrade requires computer system support as a prerequisite. If the system version is too low, the memory may not be recognized or it may not be able to boot after installation. If you choose 8GB or more than 8GB of memory total, please check if your system is upgrade to at least 64-bit already.