The SK Hynix 1GB DDR2 Laptop RAM is a set of two SO-DIMM modules with a total capacity of 1GB, with each module containing 512MB of memory. The RAM is designed for laptops and operates at a bus speed of 667MHz. It also features ECC memory for error correction and has 200 pins for compatibility with a wide range of laptop models. Ideal for upgrading or replacing existing laptop memory modules, this RAM is a reliable and efficient choice for improving system performance and multitasking capabilities.