This is a Kingston 4GB DDR3 1333MHz desktop memory module, suitable for upgrading PC memory. It has a lifetime warranty, green color, and a DIMM form factor. It operates at 1.5V with CL9 latency and has a total capacity of 4GB. The module is unbuffered, non-ECC, and non-registered, with 240 pins and a bus speed of PC3-10600 (DDR3-1333).