Male USB A to female RCA adapter cable. Allows to power 12V heaters from 5V power supplier. It has built in boost converter (FP6291) to change heater input voltage from 5V to 12V. Maximum input current is 2.1A, maximum output current 0.6A.
Please note: do not power the heater form your computer’s USB port. It will not deliver enough current to power the heater.