KDC-3057UG CD/USB-Receiver with Green Key Illumination Detachable FaceplateFront USB & AUX Input USB Car Stereo KDC-220UICD-Receiver with Front USB & AUX InputKDC-130UBCD-Receiver with Front USB & AUX Input.KDC-130UGCD-Receiver with Front USB & AUX Input.KDC-130URCD-Receiver with Front USB & AUX Input.