JSI Tip 2393. How can I add additional LPT ports in Windows 2000?

Windows 2000 supports 3 LPT ports, LPT1, LPT2, and LPT3, by default.

You can add additional ports, up to LPT9, by using Regedt32 to navigate to:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows NT\CurrentVersion\Ports

You can see the available ports in the right hand pane.

On the Edit menu, Add Value name LPT#: as a REG_SZ data type. Leave the String empty.

NOTE: # represents a number from 4 through 9.

After exiting the Regedt32, stop and restart the Spooler service, either in the Services tool, or at a CMD prompt:

net stop spooler
net start spooler