Get on Amazon.com : http://www.amazon.com/gp/product/B004NDU37A?tag=clothingattes-20<br /><br />DC-Powered 4-Port USB Hub CNX-P5USB (12v and 24v systems)<br /><br />Internal DC-DC Regulator Accepts 7-32 Volts <br />Battery Overvoltage Surge Protection <br />Designed specifically for automotive use- Unit powers on and off with Ignition Status <br />Survives Engine Cranking Voltage Fluctuation <br />Delayed Shutdown Jumper Selectable 5 minutes or 25 minutes
