This 2 GB (2 x 1 GB module) DDR RAM memory module is manufactured by Apple and is compatible with a DIMM 184-pin slot. Clock speed is 400 MHz. In the world of fast and sometimes tremendous development of computer technologies Apple remains the incontestable leader. When you heard "Apple" you are completely sure that it goes about high quality and high reliability and your choice is determined beforehand in the favor of this company. That's why memory upgrade options from Apple seem to be the best possible solution for you to upgrade your computer and to reveal its hidden power.