Microsoft KB Archive/175489

= Serial Pointing Device Not Detected by Windows NT =

Article ID: 175489

Article Last Modified on 8/17/2005

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APPLIES TO


 * Microsoft BallPoint Mouse 1.0 Standard Edition
 * Microsoft BallPoint Mouse 2.0 Standard Edition
 * Microsoft Easyball
 * Microsoft IntelliMouse 1.0
 * Microsoft Mouse
 * Microsoft Mouse 2.0
 * Microsoft Home Mouse 2.0
 * Microsoft Windows NT 3.51 Service Pack 5
 * Microsoft Windows NT 4.0
 * Microsoft IntelliPoint 2.0
 * Microsoft IntelliPoint 2.0a
 * Microsoft IntelliPoint 2.1

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This article was previously published under Q175489



SYMPTOMS
When you connect a serial pointing device to your Windows NT-based computer, Windows NT may not detect the pointing device.



CAUSE
This behavior can occur if a serial pointing device is already connected to a serial (COM) port. Windows NT detects only one serial pointing device.



MORE INFORMATION
The second pointing device is not detected because the IntelliPoint and Windows NT drivers search for only a single serial pointing device connected to the computer. When a serial pointing device is detected, the IntelliPoint and Windows NT drivers stop searching the serial (COM) ports for additional pointing devices.

Additional query words: found seen winnt

Keywords: kbhardware KB175489

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