This USB contains a variety of powerful, open-source hacking and Linux tools, including Black Arch, Tails, Caine, and more. Designed for use with Kali and Linux operating systems, this USB has a minimum RAM requirement of 2 GB and a minimum processor speed of 2 GHz. It is compatible with unlimited devices and has no California Prop 65 warnings. This unit is a live USB with a minimum hard drive space requirement. The manufacturer warranty is described in the item description. The USB comes in a unit format and is in English language. It is a great tool for those who require powerful hacking and Linux tools.