The Micron 4GB DDR4 SO-DIMM 260 Pin RAM Memory Module is a high-quality memory module designed for laptops and other portable devices. This module, with a total capacity of 4GB and a bus speed of PC4-21300 (DDR4-2666), offers reliable performance and fast data transfer rates. With its SO-DIMM form factor and DDR4 SDRAM type, this module is compatible with a wide range of devices and provides a seamless upgrade option for improving system speed and efficiency.