The 500658-B21 is a DDR3 module offered by HP, designed to enhance the computing capabilities of servers and high-performance workstations. It adheres to the PC3-10600 specification, operating at a speed of 1333 MHz to efficiently manage and process data. With a 4GB capacity, this module integrates ECC (Error-Correcting Code) and RDIMM (Registered DIMM) technology, featuring a 2Rx4 configuration that provides additional reliability and stability for business-critical applications. The incorporation of ECC allows the module to detect and correct internal data corruption, ensuring a higher level of data integrity and system uptime. The 240-pin design ensures compatibility with a wide range of motherboards, offering a versatile solution for system upgrades or replacements. The 500658-B21 is tailored for those in need of dependable memory solutions in environments where performance and reliability are essential.