HyperX 8GB Kit 1866MHz DDR3 PC3-14900 Non-ECC CL11 1.35V Low Voltage SODIMM Notebook Memory DDR3 1866 KHX18LS11P1K2/8 8GB Kit (2x4GB) of DDR3 Non-ECC Notebook Memory Utilizes HyperX module with faster latency timing for higher performance and speed Specifically designed and tested for compatibility in various makes and models of desktop computers From the industry leader in PC memory Non-ECC 1866MHz 204-pin CL11 Unbuffered SODIMM Backed by a lifetime warranty and free technical support