The new pop-up grommet outlet & USB charger will add instant convenient AC power and USB charging accessibility to your unused grommet. Keep your laptops, tablets, phones, or other mobile computing devices charged and ready to go at your desk, in your conference room, or anywhere ELSE power access is needed. Retractable power supply includes four AC outlets, two USB charging ports, and a 10' power cord. Tucks away neatly when not in use. Overall measures 2.86" in diameter. Requires a 2.36" (60mm) hole. In the closed position, you can eliminate desktop wiring clutter. Features overcurrent and voltage surge protection. Ulf/cull listed. Tested for ulu 962A (furniture power distribution) and ulu 1449 (surge protective device)