The Samsung 4GB DDR4 PC4-21300 2666MHz 260 pin SO-DIMM memory module is a high-quality RAM upgrade designed for computers and laptops. With a form factor of SO-DIMM and DDR4 SDRAM type, this memory module is ideal for improving the speed and performance of your device. The 4GB capacity provides ample memory for multitasking and running demanding applications smoothly. The 1.2V voltage requirement ensures compatibility with a wide range of devices. Upgrade your system with this reliable and efficient Samsung memory module for enhanced performance and efficiency.