Mushkin Enhanced Error Correction Code (ECC) memory, used for the detection and correction of errors introduced during transmission of data, is constructed from only the highest quality of components and is painstakingly tested to provide you with the performance and reliability you require for mission critical applications and processes. Mushkin's passion for product and high calibre service has earned them a reputation of unparalleled quality and industry leading excellence in support. The 991735 2GB (inc single 2GB module) DDR3-1333 (PC3-10666) Proline memory kit has a latency of 9-9-9-24, test voltage of 1.5volts and has Registered ECC. This memory kit is backed by a lifetime warranty and genuine, unmatched service and support.