Disclaimer: This article assumes your UPS has a network module and is connected to a network.

From time to time it comes to pass that someone has configured a UPS and that person has left the company. No one knows how to connect to it or what the password is. What do you do? Most server size UPS, 750KVa and above have a reset option. APCs for example have a small reset button on network module.

By holding the reset button for 40-60 seconds the network module resets to factory default. You should be able to find the UPS on your network either through a discovery tool or us a scan tool like Advanced IP Sanner. Browse to the IP of the UPS. Typically the username and password for an APC ups is apc.