The LENOVO 00D4955 is a 4GB Low Profile (LP) Unbuffered Dual In-Line Memory Module (UDIMM) designed to increase the performance of certain IBM server systems. Operating at 1600MHz and adhering to PC3-12800 standards, this module incorporates Error-Correcting Code (ECC) to detect and correct data corruption, ensuring reliability and system integrity crucial in server environments. With its 2Rx8 configuration, it uses double-rank architecture for improved signal integrity and performance. The module operates at a voltage of 1.5V, optimizing power consumption while maintaining performance. This ECC DDR3 memory is specifically designed for compatibility with a wide range of IBM servers, offering a cost-effective way to enhance system performance, increase multitasking capabilities, and facilitate faster data processing and retrieval in critical computing environments.