Upgrade your computer's memory with this Samsung 4GB DDR4 RAM. This high-capacity RAM is designed to provide reliable and efficient performance for your computer. With a bus speed of PC4-21300 (DDR4-2666), it offers speedy data transfer rates and is compatible with a range of computer systems. The RAM has a total capacity of 4GB, with a capacity of 4GB per module. This DDR4 SDRAM is perfect for those looking to improve their computer's performance. It has a 260 PIN SO-DIMM form factor and a CL 19 rating. This product is a great investment for those who want to boost their computer's speed and ensure it runs smoothly.