Is there any way to test if the PSVR2 turns on without a PS5 or PC adapter?

Hello everyone, is just a quick question that I haven't been able to find anywhere

I'm going to buy the PSVR2 tomorrow another user, but the user has already sold the PS5 (his profile shows he sold it a month ago or so) so I can't try the PSVR2 at his home, but I was wondering,

Is there any way to turn it on and just check if the screen and anything else is working?

Like I don't know, maybe if I plug the cable to something else it turns on but show some kind of bluescreen or "device not compatible" or something?

The user has 4.9/5 review from 77 other sales so I do trust him, but just in case