In principle, the physical interfaces can be accessed the same way as described for the [[Physical_devices_mapping_(XUELK)|Yocto root file system]]. However, some of them require a different approach. For more details, please refer to the following sections.
===Ethernet===
Please refer to See [[#Adding packages|this section]].
===Bluetooth and WiFi===
The root file system contains the same calibration file indicated [[XUELK-AN-001:_Using_WiFi-Bluetooth_combo_plugin_with_SBC_Lynx#Calibration|here]].