2-Pak Cooper Wiring Devices TR7740W-BOX Combination USB Charger with Tamper Resistant Receptacle, White Compact design features standard AC receptacle with dual USB charging ports USB ports charge any electronic device that is capable of being charged via a 5V power adapter LED indicator light notifies user that device is charging Replaces a standard duplex receptacle Automatic grounding system eliminates need for bonding jumper in grounded metal enclosure, provides redundant measure of ground continuity where jumper is used