The 30″ long regulated Tri-Tap to LP-E6 Type Dummy Battery provides power to an optional camera or device. The cable is regulated to provide the correct voltage to your camera, and in addition, the in-line voltage regulator helps prevent electrical noise from being introduced into your camera. There is also a USB port that outputs 5 volts of power at up to 2 amps, enabling it to power most USB devices on set, including smartphones and some tablets. Also, a female D-tap output is also offered, so you can still power you D-tap accessories while using the D-USB and power out cable. Made in the USA.