This APC Back-UPS offers power and surge protection for wireless networks, computers, gaming consoles and other electronics in your home or business. The 550VA floor/wall mount UPS has 8 total outlets, 4 of which are battery back up and surge protection, and 4 that are surge protection only. It has a surge energy rating of 340 Joules. This battery backup is designed to power wireless home networking devices (router and modem) for hours during utility outages so you can stay connected and productive. This computer backup offers lifetime guaranteed surge protection with a 75,000 dollar equipment protection policy. The side of this 550VA UPS includes 2 keyhole sockets to easily mount the battery backup on a wall in hard to reach installations. The outlets are arranged with spaces to accommodate both average sized power plugs and transformer block power plugs. Use the included PowerChute software to configure settings and set up automatic graceful shutdown of a connected PC in the event of an extended power outage. Audible alarms provide notification of changing utility power and UPS conditions. Audible alarms can be muted. It is compatible with a dedicated user-replaceable battery, and the APC replacement battery cartridge helps restore UPS performance to the original specifications.