This is a Nintendo Wii Rock Band Guitar Dongle model VFRWGTSELEA1B USB Receiver Fender Stratocaster. It is an external attachment that connects to your Nintendo Wii console via USB and allows you to use the guitar controller with Rock Band and other music game software. It is compatible with the Wii platform and is made by Nintendo. The dongle is in good working condition and is ready to use with your Rock Band set.