http://qkpm2ov2rjhjkhfsftskqho77uj5rewd5y44unkf6cb7tdhaxwcvh2id.onion/books/apc/APCUPSD%20User%20Manual.html
The solution to the problem is to add a rule to the udev
rules file. On Fedora FC3, this file is found in /etc/udev/rules.d/50-udev.rules . Start by adding the following
line: BUS="usb", SYSFS{idVendor}="051d", NAME="usb/hiddev%n" Note that this rule uses obsolete udev syntax and is specific to
FC3 and other distributions of similar vintage.