The 2PCS ProMOS 1GB 2Rx8 DDR2-533MHz-CL4 0701-M2624943 PC Memory set of 2 consists of two 1GB DDR2 SDRAM modules from ProMOS Technologies. These DIMM memory modules have a bus speed of PC2-4200 (DDR2-533) and a total capacity of 2GB. Manufactured in Malaysia, this memory set is designed to enhance the performance and capacity of your computer system while providing reliable and efficient memory storage for various applications. Upgrade your computer's memory with this quality and reputable ProMOS memory set.