Multiple midi controllers (same brand) need reassigning every time.

I have three Akai LPK25 midi controllers, same brand, same model, each assigned to their own track in cubase (controlling different VSTI’s).

Every time I open Cubase, they are listed in the Inspector’s Midi Input section, with the same name “LPK25”, and each track picks the top one. I have to reassign the second and third LPK on the other 2 tracks every time. Any way to get Cubase to recognize them as distinct controllers?