you are not going to like this but here goes it won't work for you unless you find it address.
so this one won't let you steal from the uni.
All I need to do is get into the configuration file and I can make it work. How can I find it's IP when plugged directly into my computer?
Normally you would need to set up connection sharing. Just plugging in a miner to computer I doubt set's up connection sharing automatically (unless it comes up with a set-up as you did it).
Have you tried going direct into router? Normally that is best connection as you don't need a computer on to connect. Long term a computer is a high priced way to get network connection.
Mayyyybe you could try plugging a router of your own and see if it can work as an access point. I'm not sure if you're going to get your own list of ip device, but maybe it will at least give you a GUI to tell you what the IPs are.
Worth trying if have one handy.