RAM PATRIOT 4GB SO-DIMM DDR3 1600MHz CL11 Signature Line:A 4 GB high-capacity Patriot DDR3 memory module designed for modern notebooks. It has been designed for a 1600 MHz operating frequency with which it can play CL11 timing. The Signature Line model line guarantees outstanding compatibility and performance. Each module is carefully tested by the manufacturer, which guarantees a lifetime warranty for each module.Parameters and Specifications:Type:SO-DIMM DDR3Size:4 GBFrequency:1600 MHzTiming:CL11Certification:PC12800Interface:204 pinsPower supply:1.5 V