Bi-Directional USB to parallel cables
what you ​need to print with your older hp designjet printer

•  Cables will work ONLY if they are bi-directional. Many cables will be bi-directional without being labelled as such...but you could waste a lot of time with those. Get one that is labelled as such, ok? 
• Do not plug a USB to Parallel Cable into a USB hub or extender. Trust me, it needs to be just the cable between your computer and printer.
• ​The cables on this page have been tested by The Plotter Princess and proven to work in a non-networked situation.

6 ft Bi-Directional USB to parallel printer cable