Thank you for appreciation of Quas. Unfortunately, I don't have a Quest Pro headset, but since the firmwares and shells of all Meta Quest headsets are generally similar, ADB should work roughly the same on all of them.
I'm not quite sure what you mean by "put the headset to PCVR mode" Are you referring to connecting the headset to a PC via Meta Link or Air Link?
ADB is not used in this case—it is an Android operating system mechanism and serves only as a tool for management, control, diagnostics, testing, and other supplementary functions that are built into the Quas program itself.