For the Lenovo Tab P12 Pro, connecting via USB will show a yellow warning sign on the device in Device Manager when USB mode is set to "File Transfer." This issue is not caused by spacedesk but due to this issue, spacedesk is not able to detect the device via USB.



To resolve the issue, upon connection to Primary PC, go to "USB Settings" or equivalent in your device, then set USB mode to "PTP"/"Transferring images" before turning on "USB Cable Android" in the spacedesk Driver Console.

 


If this issue is also observed in other devices, please report to spacedesk Forum support.