BESSKY 1GB USB 2.0 Metal Flash Memory Stick Storage Thumb U Disk, Red Compatible with USB 2.0. Capacity: 1GB. Speeds of up to for handling your large photos, videos, or other files in a fraction of the time. Supports Windows 7 / 8 / 98 / Me / 2000 / XP / Vista / Linux 2.4, Mac OS 9.0 And above Etc Computer operating systems. Speed: Writing Average 10-12MB/Sec. Speed:Reading Average 3-5MB/Sec. Effect of U disk read and write speed will be affected by temperature and transport.