The SanDisk CRUZER Micro USB FLASH DRIVE 512MB is a brand new sealed USB optical drive designed for use with laptops, PCs, memory vaults, and Macs. With a storage capacity of 512 MB, this USB flash drive is perfect for storing and transferring large amounts of data quickly and securely. The SanDisk brand ensures reliable performance and compatibility across a variety of devices, making it a convenient and essential tool for anyone in need of additional storage space on their computer or other devices.