Update: Amazon also offers a similar BGE90M model (4.4/5 stars) but with more power (70WH vs. 90WH) and 2 USB ports as well as the three outlets for $24.99 Prime shipped. This is especially useful if you also need to keep a phone or tablet running too during an unexpected outage.
Amazon offers the APC Back-UPS Connect Model BGE70 3-outlet Home Network Uninterruptible Power Supply for $19.99 Prime shipped. While it is currently out of stock, you can still order now, lock it in at this price and you won’t be charged until it ships. Today’s deal is a match to previous mention for the lowest we’ve seen for this UPS.
It allows you to keep your cable/DSL/Fiber modem and Wifi router online during a power outage for up to three hours. It has 3 separate outlets, a 5 foot cable and includes a 3-year warranty. Rated 4.4/5 stars from 290 Amazon shoppers.