USB to DC 3.5 1.35mm 2.0 0.6mm 2.5 0.7mm 4.0 1.7mm 5.5 2.1mm 5.5 2.5mm Plug Jack DC 5V Power Extension Cable Connector. Provides 5V DC from USB. Connector A: USB 2.0 A Male. Connector B: 2.0mm x 0.6mm, 2.5mm x 0.7mm, 3.5mm x 1.35mm, 4.0mm x 1.7mm, 5.5mm x 2.1mm ,5.5 2.5mm (optional).
