I have two Dymo label printers. I tried installing the printer using CUPS web admin as well as the Print & Scan under System Preferences. Both printers installed fine. When I print from either the print jobs are sent to only one of the two. The purpose of two printers is to avoid the constant changing of label sizes.
If it helps: my goal is to have two printers available. One prints large labels. The other prints small labels. When i go to print, I am able to choose which printer to print from.
Best Answer
Dymo label drivers are quite picky and ask that you not connect the devices until the installer asks specifically for the device to be connected. I believe that is to prevent both queues going to the first device in the USB chain, but I don't have two to test with.
I would delete both printer definitions and start with the installer from here:
The read me has the following caution:
So you could try deleting only one queue and then disconnecting the printer that printed from the other queue and try setting up the second printer again.