US/JP Keyboard Converter with Ctrl/Caps swap function is an USB HID level converter for keyboards. With this converter, you can use US keyboard on JP machines without any modification. You just need to insert this device between target JP machine and US keyboard, done. It works without any additional driver(works with normal USB HID keyboard driver) or AC adaptors(uses USB Bus Power). The best solution for field engineers who love US Keyboards on customer’s windows Machines with Japanese language settings.