Universal Power Jack Adapter 2.1 x 5.5 mm to 1.7 x 4 mmUniversal Power Jack Adapter.
Connector A: 4 mm external Ø x 1.7 internal Ø mm.
Connector B: 5.5 mm external Ø x 2.1 internal Ø mm.
Assembled with a black PVC cover.
Compatible with model #VF00x power supplies to accommodate other diameters.