> For the complete documentation index, see [llms.txt](https://docs.adti.camera/adti-camera-serial-control-tutorial/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.adti.camera/adti-camera-serial-control-tutorial/adti-serial-port-compatibility.md).
# ADTi serial port compatibility
ADTI has own serial port camera control protocal, most of ADTi latest version cameras are compatible with ADTI control protocal.
The ADTi cameras which are compatible with ADTi control protocal are: ADTi 24L V2, 24S V3, 36S, 42S, 42L, 61S, 61PRO.
The ADTi cameras which are NOT compatible with ADTi control protocal are: ADTi 20L, 24L V1, 24S V1, 26S V1, 26S V2.
If you bought ADTI 20L, 24L V1, 24S V1, 26S V1, 26S V2, this page will not be useful for your camera setup.
There are three ways that user can use ADTi camera control protocal for camera parameters changing
1. **ADTi serial port directly connect to PC via USB**
ADTI 24L V2, 24S V3, 36S, 42S, 42L, 61S, 61PRO cameras have RX/TX serial port, you can use TTL to USB adopter to connect camera RX/TX port to your PC .
( This adopter is not included in the camera packge)
1. **using ADTi serial port touch screen**
(above photo shows how to connect a serial port display to change the ADTi 42L camera settings.)
