This isn’t a very common problem but since the solution is simple, it may come in handy. Konica-Minolta is one of the rare companies that doesn’t provide Mac drivers for at least some of their printers. Luckily enough not all of their printers are manufactured by Konica-Minolta either. So to print on a MagiColor 2490MF simply install the printer drivers for the Xerox 6115MFP. Works great via both, USB and network connection.