This product is a lot of two 4GB PC3L 12800U desktop memory RAM modules from Micron. They have a DDR3 SDRAM form factor, DIMM type, and a total memory capacity of 8GB. These RAM modules have ECC memory features and a lifetime manufacturer warranty. Each module has 240 pins, making them compatible with standard desktop computers. Upgrade your computer's memory capacity with this reliable and high-quality RAM from Micron.