EMTEC Animal Series 4 GB USB 2.0 Flash Drive, Monkey 4 GB storage capacity Read speed: up to 24 MB/s Write speed: up to 10 MB/s Cap holder with chain included Plug-and-play compatibility with Windows 2000, XP, Vista and 7; Mac OS 10.4 or higher; Linux Compatible with all USB 1.1 and USB 2.0 devices 2-Year limited warranty