The Samsung 4GB 1Rx8 PC3L-12800U - 11-13-A1 (M378B5173EB0-YK0) Memory is a high-quality DDR3 SDRAM memory module manufactured by Samsung. With a total capacity of 4GB and a form factor of DIMM, this memory module is designed to provide fast performance and reliable storage for your computer system. The module has 240 pins and is compatible with PC3-12800 (DDR3-1600) bus speed. Its non-ECC memory features make it suitable for various computing tasks, delivering efficient and stable performance for your system.