Microsoft KB Archive/101365

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Knowledge Base

Configuring COM1 and COM2 via Control Panel

Article ID: 101365

Article Last Modified on 10/31/2006


  • Microsoft Windows NT Advanced Server 3.1
  • Microsoft Windows NT Workstation 3.1
  • Microsoft Windows NT Advanced Server 3.1

This article was previously published under Q101365

The Control Panel - Ports utility has no provision for configuring advanced options (IRQ, I/O address, COM port number and FIFO enable) for COM1 and COM2. Any advanced options for COM1 and COM2 will need to be made directly to the registry via the REGEDT32.EXE utility.


Windows NT 3.1 and Windows NT 3.1 Advanced Server support up to a maximum of 256 COM ports. The Control Panel - Ports utility provides a means of adding/modifying COM ports 3 through 256.

Additional query words: prodnt communication communications serial

Keywords: kbenv KB101365