# How to change baud rate in slot#1 UART
**URL:** https://mangoh.discourse.group/t/how-to-change-baud-rate-in-slot-1-uart/9272
**Category:** Uncategorized
**Created:** [June 2, 2021, 12:23am UTC](https://mangoh.discourse.group/t/how-to-change-baud-rate-in-slot-1-uart/9272 "2021-06-02T00:23:52Z")
**Posts on this page:** 5
**Page:** 1
### Author:  [@takashishiina](https://mangoh.discourse.group/u/takashishiina)
#### Post date: [June 2, 2021, 12:23am UTC](https://mangoh.discourse.group/t/how-to-change-baud-rate-in-slot-1-uart/9272/1 "2021-06-02T00:23:52Z")
My customer bought MangOH green board and RENFELL UART RS232-4W (0107-03-R2.1).
By their tutorial, customer succeeded additional UART via USB (FTDI). But the baud rate is still default 9600bps.
Customer asked baud rate changing process to RENFELL but not receive any answer yet.
Do you know good procedure to set baud rate 115200bps?
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### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [June 2, 2021, 1:22am UTC](https://mangoh.discourse.group/t/how-to-change-baud-rate-in-slot-1-uart/9272/2 "2021-06-02T01:22:10Z")
what is the AT!MAPUART?
Is it using linux data mode or console mode for UART1?
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### Author:  [@takashishiina](https://mangoh.discourse.group/u/takashishiina)
#### Post date: [June 2, 2021, 1:36am UTC](https://mangoh.discourse.group/t/how-to-change-baud-rate-in-slot-1-uart/9272/3 "2021-06-02T01:36:41Z")
No, I do not use UART port.
To use this RS232 4 wire slot card, I enabled FTDI interface as below.
modprobe ftdi\_sio
So, I saw this unit as ttyUSB0.
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### Author:  [@jyijyi](https://mangoh.discourse.group/u/jyijyi)
#### Post date: [June 2, 2021, 2:04am UTC](https://mangoh.discourse.group/t/how-to-change-baud-rate-in-slot-1-uart/9272/4 "2021-06-02T02:04:58Z")
it is still connecting to UART1 of module, right?
what is the AT!MAPUART?
Is it using linux data mode or console mode for UART1?
if you are using UART1 as linux data mode, you will see /dev/ttyHS0 in your module and you need to control the module baud rate in your application.
e.g.
stty -F /dev/ttyHS0 raw 115200 -crtscts
microcom /dev/ttyHS0 -s 115200
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### Author:  [@takashishiina](https://mangoh.discourse.group/u/takashishiina)
#### Post date: [June 2, 2021, 7:00am UTC](https://mangoh.discourse.group/t/how-to-change-baud-rate-in-slot-1-uart/9272/5 "2021-06-02T07:00:16Z")
It’s working fine, thanks.