It is perfectly suited for small electronic devices and devices that use a 5.5mm jack for a cable (use a DC cap with 5.5mm outside diameter and 2.1mm inside diameter ). Plug and play links with USB A male to DC 5.5mm / 2.1mm Charger Cable for USB lights, , cartoon clocks, radiator, 5V mini speaker, USB HUB. 75cm length / 3 feet to meet your needs for long term. Note: Pay attention to the connectors please, it is USB type A male to DC 5.5mm / 2.1mm. Black color Material: rubber, copper clad steel Cable length: 75cm / 3 feet Type a USB connector male to 5.5mm (external), 2.1mm (inside) male coaxial / cap Provides 5V DC from USB Works with any device with DC 5.5mm / 2.1mm USB Adapter The package includes: 1 x USB Cable 5.5mm / 2.1mm Note: Light and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.