The Specific Port Unknown
When you plug the printer USB cable into your computer USB port, if you get a message at the bottom right (System tray) saying that "The specific Port Unknow" do the following to solved that issue. Your computer will not recognize your printer unless you do the following.
- Click Start | Run | Type Regedit | Click Ok or press Enter
- Navigate to "HKEY_LOCAL_MACHINE/System/CurrentControlSet/Control/Print/Monitors
- Look for USB Monitor
- If there is none create one. Right click on Monitor> New > Key
5. Name it USB Monitor
6. In the right pane, right click> New > String Value
7. Enter Driver as the name
8. Double click Driver and enter usbmon.dll as the value
9. Restart the computer
9. Restart the computer