3' USB Extension Cable connects to a USB port and provides a 3' extension. The female end of the cable features a flush mountable design. You can simply drill a 3/4” hole at the desired mounting location and snap the end of the cable in for an OEM look. The USBDMA3 also features a mounting bracket that can be used to mount the USB connector without drilling holes in the vehicle. Snap the cable into the bracket and mount it wherever your installation demands. Ideal for er aftermarket head units such as Pioneer, Kenwood and Alpine that feature a rear USB input Two mounting options 3' Long