# Pixhawk Telem2 Port not appeared

**URL:** <https://discuss.px4.io/t/pixhawk-telem2-port-not-appeared/24443>\
**Category:** Uncategorized\
**Created:** [October 5, 2021, 8:36am UTC](https://discuss.px4.io/t/pixhawk-telem2-port-not-appeared/24443 "2021-10-05T08:36:12Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![Serahan](https://discuss.px4.io/user_avatar/discuss.px4.io/serahan/32/9249_2.png) [@Serahan](https://discuss.px4.io/u/Serahan)\
**Post date:** [October 5, 2021, 8:36am UTC](https://discuss.px4.io/t/pixhawk-telem2-port-not-appeared/24443/1 "2021-10-05T08:36:12Z")

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I use the Pixhawk4 from Holybro.

Airframe  
Airframe type : Quadrotor x  
Vehicle : Generic Quadopter  
Firmware Version 1.12.3

and I use Telem1 on telemetry.

I want to use Telem2 on Wi-Fi.  
So, I tried to change Telem2’s baudrate to 921600.

But I can’t found the parameter “SER\_TEL2\_BAUD”.  
Why did it happen?

 ![question](https://discuss.px4.io/uploads/default/original/2X/4/4f4ca2d55895888a5d26bf6489ddccd4e2f7284c.png)

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<div class="post-metadata">

**Author:** ![Jaeyoung-Lim](https://discuss.px4.io/user_avatar/discuss.px4.io/jaeyoung-lim/32/10829_2.png) [@Jaeyoung-Lim](https://discuss.px4.io/u/Jaeyoung-Lim)\
**Post date:** [October 5, 2021, 9:22am UTC](https://discuss.px4.io/t/pixhawk-telem2-port-not-appeared/24443/2 "2021-10-05T09:22:02Z")

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@Serahan You need to add a new serial instance by defining `MAV_2_CONFIG` and reboot the firmwrae in order to see `SER_TEL2_BAUD`

([Parameter Reference | PX4 User Guide](http://docs.px4.io/master/en/advanced_config/parameter_reference.html))