Ruth's sister 4.0 x 1.35 mm male to 5.5 x 2.1 mm female internal power cable

4.0 x 1.35 mm to 5.5 x 2.1 mm adapter

This internal power cable converts a 4.0 x 1.35 mm male plug into a 5.5 x 2.1 mm female socket. It allows devices with the larger barrel connector to draw power from sources fitted with the smaller jack. The adapter is sold as a single unit.

Replaces mismatched barrel connectors

Use this cable when a power supply or distribution board provides a 4.0 x 1.35 mm output but the driven component requires a 5.5 x 2.1 mm input. It is not suitable for builders who need the opposite gender arrangement or a different barrel diameter.