Kingston is the industry leader in PC memory. Designed with the whitebox user and system integrator in mind, Kingston ValueRAM products are engineered to meet industry standard specifications and rigorously tested to ensure quality. Kingston ValueRAM is ideal for those who purchase memory by spec and are looking for competitvely priced generic memory. Product is backed by a lifetime warranty and free technical support. Included in the package is a kit of two 2GB modules of 1333MHz DDR3 memory for a total of 4GB. Specs are 256Mx 64-bit, Non-ECC,CL9, 240-pin unbuffered DIMM, gold contacts, 1.5v.