# Revision history [back]

Hi Martin! (it is funny to greet someone with the same name as yourself xD)

openni_launch has a parameter named device_id that allows you to select the kinect that you want to use:

<!-- device_id can have the following formats:
"B00367707227042B": Use device with given serial number
"#1"              : Use first device found
"2@3"             : Use device on USB bus 2, address 3
"2@0"             : Use first device found on USB bus 2
-->
<arg name="device_id" default="#1" />


so, for instance, you can do:

roslaunch openni_launch openni.launch device_id:=whateveryourdeviceidis


I hope this helps