The product is a set of two 2GB DDR2 SDRAM memory RAM modules from Offtek, designed in DIMM form factor. With a total capacity of 4GB (2GB per module), the memory is compatible with a bus speed of PC2-5300 (DDR2-667). This replacement memory RAM is ideal for upgrading or expanding the memory capacity of a computer system, providing additional support for running multiple programs or applications smoothly.