Features: CT2K51264BF186DJ is a 8GB Kit (4GBx2) DDR3 Notebook modules that operate at speed up to 1866 MT/s and has a CL13 latency. It is dual voltage and can operate at 1.35V or 1.5V. It is Unbuffered and is non-ECC. It conforms to the industry standard SODIMM layout of 204 pins and is compatible with computers that take DDR3 SODIMM memory.