The LENOVO 30R5150 is a premium memory upgrade kit designed for select IBM and Lenovo systems, enhancing their performance and multitasking capabilities. This kit includes two 2GB modules, totaling 4GB of PC2-4200 DDR2 SDRAM. Operating at a speed of 533MHz, this memory kit ensures smoother and faster execution of applications, allowing systems to handle more data simultaneously without significant slowdowns. Each module in this kit is meticulously crafted to meet the rigorous quality and compatibility standards that Lenovo and IBM are known for, ensuring a reliable upgrade for your system. The memory is unbuffered and comes with Error Correcting Code (ECC) to detect and correct various types of data corruption, making it an ideal choice for critical systems where data integrity is paramount. Easy to install, the LENOVO 30R5150 kit is perfect for enhancing the capabilities of workstations, servers, and other high-performance machines, providing them with a noticeable boost in productivity and efficiency.