eXpansys offers its Expansys 120-volt 5-Outlet USB-Controlled Surge Protector, model no. BH0311U-USB, for $14.99. With free shipping, that’s the lowest total price we could find for such a device by $11. It features a 3-foot power cord, 3.75-foot USB cable, and five 3-prong outlets. When connected to your computer via the USB cable, it turns off all connected devices automatically when you turn off your computer.