To configure a simple-signaling Uninterruptible Power Supply (UPS) device
You must be logged on as an administrator or a member of the Administrators group in order to complete this procedure. If your computer is connected to a network, network policy settings may also prevent you from completing this procedure.
Open Power Options in Control Panel.
On the UPS tab, click Select.
In the UPS Selection dialog box, under Select manufacturer, select Generic.
In Select model, select Custom.
In On port, select the COM port where the UPS device is connected, and then click Next.
In the UPS Interface Configuration On dialog box, set the UPS signal polarities as appropriate for:
Power Fail/On Battery
Before changing these settings, see the documentation that came with your UPS device.
To open Power Options, click Start, click Control Panel, click Performance and Maintenance, and then click Power Options.
Using Power Options in Control Panel, you can adjust any power management option that your computer's unique hardware configuration supports. Because these options may vary widely from computer to computer, the options described may differ from what you see. Power Options automatically detects what is available on your computer and shows you only the options that you can control.