This USB Y-cable by Delock made for additional power supply of USB devices. Just plug the red connector and the black connector into 2 free USB ports of your system and the device to the USB female jack of the adapter. Thus your device will be supplied by 2 power sources. The red connector indicates the extra power source and will be provided parallel to the black data/power interface.
• USB 2.0 specification
• Interfaces: 1x USB A female data/power
1x USB A male data/power (black)
1x USB A male power (red)
• Cable length: 22,5 cm including connectors
• PC or notebook with two free USB ports
• Delock Poly bag