Knowledge Base

Some UART Chips Do Not Support 14400 Baud

Article ID: 112215

Article Last Modified on 10/31/2006

APPLIES TO

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 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

Microsoft KB Archive/112215

Some UART Chips Do Not Support 14400 Baud

SUMMARY