The 72" Male 2.5mm to Female 2.5mm Extension Cable is meant to be used with a Power System Dual or Quad to power your camera. The extension cable terminates in a 2.5mm barrel power connector on one end and a 2.5mm female connector on the other. The cable has been polarity tested with the Power Dual & Quad systems, but can also be used with other power solutions featuring a 2.5mm connector. Made in the USA.