There’s a better way. Put something like this into /etc/udev/rules.d/wakeup.rules:
# Prevent Logitech (046d) Bolt (c548) devices from waking up the computer
ACTION=="add", SUBSYSTEM=="usb", DRIVERS=="usb", ATTRS{idVendor}=="046d", ATTRS{idProduct}=="c548", ATTR{power/wakeup}="disabled"
You’ll have to replace the vendor and device codes (046d and c548 respectively) with whatever device is waking up your PC. It’s usually not hard to figure that out, e.g.:
$ lsusb
...
Bus 001 Device 003: ID 046d:c548 Logitech, Inc. Logi Bolt Receiver
...
This is both easier to do, and it’s also independent of which USB port the device is plugged in.