APC Back-UPS NS 600VA 8-Outlet Power-Saving UPS for $39.99 shipped. To get free shipping, you simply need to sign up for Staple’s rewards program, which is free and easy. Here is a screenshot for your reference. It features 360W/600VA output capacity and 8 outlets (4 battery backup, 4 surge protection). It also has a USB port to notify the computer of power outage so that it can shut down gracefully.