A UPS like the APC Back-UPS BE600M1 has to be able to power your equipment for an acceptable amount of time to be worth installing. I tested one for a couple weeks with my networking equipment to see how well it performs in real-world conditions.
APC UPS Battery Backup & Surge Protector with USB Charger, 600VA APC Back- UPS (BE600M1)
APC UPS: 450W 120V BR700G for sale online
APC Back-UPS BE600M1 Review: Efficient Battery Backup With a Built-in USB Charger
Reviews for APC Back-UPS 600VA Battery Backup/Surge Protector with 5 battery backup outlets, 2 surge protect outlets and 1 USB port
APC UPS 600VA BE600M1 Battery Backup & Surge Protector Review - Legit Reviews
APC Be670m1 675 VA 360 Watts 7 Outlets Uninterruptible Power Supply (UPS) with USB Charging Port
PROVANTAGE: APC BE600M1 APC Back-UPS 600VA UPS Battery Backup & Surge Protector with USB Charging Port
APC Back UPS BE600M1 Battery Backup 7 Outlet 600VA330W - Office Depot
APC Back-UPS BE600M1 - UPS - 330 Watt - 600 VA
Reviews for APC Back-UPS 600VA Battery Backup/Surge Protector with 5 battery backup outlets, 2 surge protect outlets and 1 USB port
APC BE600M1 Back-UPS 600 VA 330 Watts Power Supply (UPS)
Tripp Lite Digital LCD UPS System This line-interactive UPS system protects your valuable equipment from damage, downtime and data loss. Protect home and office computer systems as well as audio and video equipment. This UPS system will support an energy efficient desktop computer and LCD monitor. This UPS system has a feature called automatic voltage regulation (AVR) and it detects when input voltage is out of bounds and corrects it without using the battery.
Tripp Lite Smart LCD 1500VA Tower Ups SMART1500LCDT
Designed for small and medium offices, this UPS helps keep delicate electronics protected in the event of a power spike or surge. The battery backup also keeps critical devices powered up and running if an emergency strikes, allowing you to keep going until the local power supply can be restored. Use to protect mission-critical electronics, such as routers, PCs and switches, during power outages or spikes. 6' cord allows flexible placement.
APC Back Ups Pro BN 1500VA BN1500M2