The Samsung 4GB 1Rx8 PC4-2133P-UA1-11 memory module is a reliable and tested DDR4 SDRAM module designed for enhancing the performance of computers. With a total capacity of 4GB and a bus speed of PC4-17000 (DDR4-2133), this DIMM form factor module is a high-quality product from Samsung, ensuring stability and efficiency in memory-intensive tasks. Made in China, this module offers a single 4GB capacity per module, providing a straightforward and dependable upgrade option for improving system performance.