.. _ups-section: ==== UPS ==== |product| supports the management of :index:`UPS` (Uninterruptible Power Supply) connected to the system. The server can be configured in two ways: * *master*: UPS is directly connected to the server, the server accepts connections from slaves * *slave*: UPS is connected to another server accessible over the network .. note:: You should consult the list of supported models before buying. Via *Administration > Software center* install the UPS package. In *Configuration* appears the new entry *UPS* where can be find the supported model by typing in *Search driver for model* field. In :index:`master` mode, the UPS can be connected to the server: * on a serial port * on a USB port * with a USB to serial adapter In :index:`slave` mode, you will need to provide the IP address of the master server. The default configuration provides a controlled shutdown in the event of the absence of power. Custom device ============= If the UPS is connected to a port that is not listed in the web interface, you can configure a custom device with the following commands: :: config setprop ups Device signal-event nethserver-nut-save UPS statistics ============== Realtime status is available from the **UPS** application dashboard. Also, if the statistics module (collectd) is installed and running, the module will automatically collect statistic data about UPS status.