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HOW TO: Change the COM Port Number in Windows 2000

This article was previously published under Q232673
This step-by-step article describes how to change the COM port number.

The COM port number assigned by Windows 2000 may not be the appropriate one therefore, it may be necessary to change it.

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Change the COM Port Number

To change the COM port number:
  1. Click Start, point to Settings, click Control Panel, and then double-click System.
  2. On the Hardware tab, click Device Manager.
  3. Double-click Ports (COM & LPT).
  4. Double-click the appropriate COM port.
  5. On the Port Settings tab, click Advanced.
  6. In the COM Port Number box, click the appropriate number (from 1 to 256).
  7. Click OK.
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Article ID: 232673 - Last Review: 02/27/2007 22:47:56 - Revision: 3.2

  • Microsoft Windows 2000 Server
  • Microsoft Windows 2000 Advanced Server
  • Microsoft Windows 2000 Professional Edition
  • Microsoft Windows 2000 Datacenter Server
  • kbenv kbhardware kbhowto kbhowtomaster KB232673