(4GB - 2GB X 2) The product is a set of two Unifosa PC RAM Memory modules, specifically the GU512303EP0202 model. These DDR3 SDRAM modules have a total capacity of 2GB, with each module containing 2GB of memory. The modules have a form factor of DIMM and are designed for use in computers that support DDR3 memory. With a bus speed of PC3-10600 (DDR3-1333), these modules are tested and have been confirmed to be in working condition. Made in Taiwan, this product is a reliable choice for upgrading or replacing memory modules in a computer.