: Try manually adding the printer through Devices and Printers . Select Add a local printer , and when choosing a port, look for one named DOT4_001 or a Virtual USB port .
: Look for IEEE 1284.4 Devices or Printers in the list. If you have downloaded a specific .inf file, click Have Disk and browse to that folder. : Try manually adding the printer through Devices
: For very old HP LaserJet models, many users have success using the HP LaserJet 3055 PCL5 or HP LaserJet 4000 driver included in Windows 7's built-in driver list. Generic IEEE 1284.4 printing support - HP Community and when choosing a port
If your computer shows an "Unknown Device" with a yellow exclamation mark in Device Manager, follow these steps: follow these steps:
