CaseBuy 10 8GB Swivel Design USB 2.0 Flash Drive Stick + 10pcs Orange Lanyard (8GB,Orange) Quantity:10piece (Every PCS test before shipping)+ 10pcs orange lanyard(7 inch(in full)). Chip: Grade A, High Quality. Capacity:8GB Operating System : Windows 7/Vista/XP/2000/ME/NT/98,Linux and Mac OS Some of the listed capacity on a Flash storage device is used for formatting and other functions and thus is not available for data storage. As such, the actual available capacity for data storage is less than what is listed on the products.