The Hynix 2GB DDR2-533mhz DIMM Kit consists of two 1GB modules that provide a total capacity of 2GB. Made in South Korea, these DDR2 SDRAM modules have a bus speed of PC2-4200 (DDR2-533) and support ECC memory features. Designed for high performance and reliability, this memory kit is ideal for enhancing the speed and efficiency of computer systems requiring precise and efficient memory operations.