Use this the power cable while visiting Japan or use to power device from USA in Japan. One end of this power cord works with most PCs, monitors, scanners, printers and other devices that use the standard USA 3-pin (IEC-60320 C13) power connector. The other end (JIS8303) features a Japanese type 2 prongs plug with ground pin. Get better power contact compare to using an international travel plug. Note: Please make sure proper voltage switched / international compatibility checked on the device before plug in. Cable only transfer power and does not convert voltage.