The Micron PC2-4200 512 MB SO-DIMM 533 MHz DDR2 Laptop Memory is a high-quality memory module designed for laptops. With a total capacity of 512 MB and a bus speed of PC2-4200 (DDR2-533), this module provides fast and reliable performance for your computer. The SO-DIMM form factor and 200 pins ensure compatibility with a wide range of laptops, making it a versatile choice for upgrading your memory capacity. Upgrade your laptop's memory with this dependable and efficient Micron memory module.