Promotional Chargers & Accessories, Allocacoc 4 Outlet 3 prong UL Listed Surge-Protected Space-Saving PowerCube with 2-USB Ports, Take your power strip to the next level with our new surge protected USB PowerCube. Cube-shape gives you four 3-prong outlets and two USB ports for your media devices. USB: Max 2.0A-DC 5V Max 15A-125V. UL listed. Great for working from home. ... #AL-PC4220 $27.15/each.