The only drawback I find that you can not adjust by software when printing the selection of the subject, but must make these settings on the printer. This one puts each fixed a standard tray.
This problem I have solved as follows:
I have the additional paper tray with A4 sheets filled, the actual specialist I leave empty and determine this (empty) tray as standard. If now I have sent an ordinary print job the printer try first the empty tray and then the Additional. If I would like to print other formats, I have to fill the paper and must not make any settings on the printer only in the upper compartment.
This product is also to increase the capacity.
Hardly installation effort - provide easy printer to the optional tray.
I am completely satisfied with the product. 5 Stars.