Fast High Performance Aluminum Stick 10-Pack USB 2.0 Flash Drive Thumb Drive Read Speed Range: 15MB - 20MB Per Second Write Speed Range: 5MB - 8MB Per Second SPEED... GUARANTEED! Manufacturer guarantees the READ WRITE speeds of all USB Drives as well as the quality of the workmanship and materials. Compatible with most operating systems Pre-formatted FAT32, to be compatible with most vehicles, televisions, media players nearly all specialized equipment that have a flash drive port. These thumb drives are free of labeling so you can brand it yourself (description exceeds maximum possible length)