Microsoft KB Archive/112215

= Some UART Chips Do Not Support 14400 Baud =

Article ID: 112215

Article Last Modified on 10/31/2006

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APPLIES TO


 * Microsoft Windows NT Advanced Server 3.1
 * Microsoft Windows NT Workstation 3.1
 * Microsoft Windows NT Advanced Server 3.1

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This article was previously published under Q112215



SUMMARY
UART chips 8250, 16450, and 16550 do not support 14400 baud rates.

If you attempt to use the Windows Terminal applet with a modem that uses a 8250, 16450, or 16550 UART chip, the following error message appears if you attempt to set the baud rate to 14400:

The selected COM port is either not supported or is being used by another device.

Select another port.

Additional query words: prodnt err msg

Keywords: kbhardware KB112215

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