Patriots Signature Line memory delivers the quality, reliability and performance expected for todays mainstream computer needs. This DRAM is built 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 a hassle-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 faster performance. Along with UDIMMs, Patriot offers a wide range of SODIMM solutions which pairs perfectly for any small form factor computers, notebooks, or laptops to help boost performance.Product Name Patriot Sig 4GB 2666MHZ UDIMM Manufacturer Part Number PSD44G266681 Product Type RAM Module Product Family Signature Line Memory Voltage 1.20 V Memory Standard DDR4-2666/PC4-21333 Memory Technology DDR4 SDRAM CAS Latency CL19 Memory Size 4 GB Form Factor DIMM Memory Speed 2666 MHz Device Supported Desktop PC Number of Pins 288-pin Signal Processing Unbuffered Product Line Signature Line Number of Modules 1 x 4GB Limited Warranty Lifetime Stock Details Manufacturer Patriot Memory Manuf Part# PSD44G266681