For charging and synchronizing an ipod and an iphone usb a plug to apple lightning plug for connecting ipods nano 7gtouch 5g to computers with usb interface for transferring data eg music editing programs like itunes also suitable as charging cable for appropriate usb power supply units specification connection 1 lightning plug apple connection 2 usb a plug data transfer rate 480 mbits usb standard usb 20 length 15m gold plated yes colour black