UPS's can be run either via the com port, or a USB cable. Most APC's have both. When connected via USB, you are not using the COM port. Reconfigure your software to look for a USB device. Windows should have detected it upon plugging it in.
The COM port seems to be already in use on your device manager tab. That means you either need to use a real RS-232 cable (make sure you don't use a null cable - it won't work) on COM 1, or use the supplied USB cable. You will not be able to make the system use COM1 when COM1 exists on your system for a real device/port that exists. You are creating a conflict.
-S
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