The SanDisk CRUZER Micro USB Flash Drive 512MB is a brand new, sealed USB drive that is compatible with laptops, PCs, memory vaults, and Macs. With a storage capacity of 512 MB, this USB optical drive is perfect for transferring and storing large files on the go. The SanDisk brand ensures reliability and quality, making this flash drive a convenient and practical choice for those in need of extra storage capacity.