Yes, with the right adapter/dock, but not very well in my personal opinion. For any wired devices connected while you are doing 60hz UHD, they will operate at USB 2.0 speeds.
Even the 2012mini with a HD4000 GPU can run 3440x1440 (albeit only @50Hz), so I’d expect even a 2015 rMB to handle that resolution already. Benchmarks show the HD515 in the 2015 model slightly better than the HD4000 and the HD615 in the 2017 rMB is said to have improved another 30+% over the 2015 model.