Serial Ports


Windows NT and Windows 2000 default includes support for three LPT ports. You
can have up to 9. To add ports:

Hive: HKEY_LOCAL_MACHINE
Key: Software\Microsoft\Windows
NT\CurrentVersion\Ports

Name: LPT4 valid lpt1 – lpt9
Type: REG_SZ
Value: leave
string blank



Settings for the currently active serial ports are listed in the values
in the following key. Settings made in Control Panel to change the serial ports
are listed here. HKEY_LOCAL_MACHINE\HARDWARE\RESOURCEMAP\LOADED PARALLEL DRIVER
RESOURCES\Serial




SERIALCOMM
HKEY_LOCAL_MACHINE\HARDWARE\DEVICEMAP\SERIALCOMM Key
lists the names of the installed serial ports.

Leave a Comment

Your email address will not be published.

This site is protected by reCAPTCHA and the Google Privacy Policy and Terms of Service apply.

Scroll to Top