Canon imagePROGRAF PRO-300 13" Photographic Inkjet Printer - Manual (Page 598)

Cannot Communicate with Printer via USB
Check1 Make sure printer is turned on.
Check2 Connect USB cable properly.
As the illustration below, the USB port is at the back of the printer.
Important
• Check the direction of the "Type-B" connector and connect it to the printer. For details, refer to the
instruction manual supplied with the USB cable.
Check3 Make sure Enable bidirectional support is selected in the Ports sheet of the
Printer properties dialog box. (Windows)
If not, select it to enable bidirectional support.
How to Open the Printer Driver Setup Window
598