The 343058-B21 is a DDR2 400 memory module manufactured by HP, designed to enhance the performance of server systems requiring reliable and high-speed data processing capabilities. With a specification of DDR2-400 1024Mx72 ECC Reg, this module operates at a frequency of 400MHz, thereby providing a balanced mix of speed and efficiency for demanding server applications. It comes with a memory size of 1GB and utilizes 240 pins for connectivity, ensuring compatibility with a wide range of server motherboards. The inclusion of Error-Correcting Code (ECC) technology is a standout feature, as it allows the module to detect and correct data corruption, ensuring data integrity and reliability in critical server environments. This module is an excellent choice for businesses looking to upgrade their server's memory capacity for improved multitasking and operational efficiency.