Using the printer port on TP Link TD-VG3631 router

I have a TP Link TD-VG3631 router which has a USB printer port - which works perfectly well in Windows.

However I cannot make it work with Mint 17.2.

Using WireShark, I found that it apparently uses Cpl- scrambler and Openwebnet, not SMB which I expected.

I have a printer which I wish to share between two Mint machines.

Any help in this regard would be much appreciated

Thanks
David Bowskill