U Disk, Robiear 4GB Guitar USB 2.0 Metal Flash Memory Stick Storage Thumb U Disk -Khaki Compact, slim, and light weight Compatible with USB 2.0 Speeds of up to for handling your large photos, videos, or other files in a fraction of the time Speed: Writing Average 10-12MB/Sec. Reading Average 3-5MB/Sec Supports Windows 7 / 8 / 98 / Me / 2000 / XP / Vista / Linux 2.4, Mac OS 9.0 And above Etc Computer operating systems