Read Speeds up to 140MB/sec; Write Speeds up to 80MB/sec Store and transfer large files faster than ever with USB 3.0 technology Allows for quick and easy transfer of all content The 256GB Turbo USB 3.0 Flash Drive can hold approximately 47,349 songs Sliding collar, capless design with integrated loop makes it easy to attach to key chains, backpacks and etc. Backwards compatible with USB 2.0 ports, so you can utilize any USB 2.0 or USB 3.0 port; compatible with most PC and Mac laptop and desktop computers