The HP 647871-B21 memory module is a high-performance, energy-efficient, 4GB RAM kit designed to enhance the performance of HP servers and workstations. Operating with a speed of 1333 MHz, this Single Rank module utilizes PC3L-10600 technology, ensuring a smooth and efficient data processing capability. The low-voltage design helps in reducing the power consumption of your system, making it an eco-friendly and cost-effective upgrade. Optimized for compatibility with HP systems, this memory kit is an ideal solution for boosting the system's performance, supporting complex applications, and enhancing multitasking capabilities. Perfect for businesses and IT professionals looking to upgrade their system’s memory without compromising on quality, the HP 647871-B21 offers reliability and performance needed to meet the demands of today’s computing environments.