Aorus Gaming 5

According to the BIOS help you should be able to get a printscreen at any of the menus. When I try and get a screenshot using F12 I get the following error. I have tried a PS2 Keyboard, and 3 different USB Keyboards. I have tried the Keyboard in every USB socket on the motherboard as well. Also tried the Keyboard print Screen key. Any clue how this is meant to work ? I am on BIOS F5 Just discovered that if you put a USB flash drive in a USB socket this function starts to work. The error is misleading. What they mean is that there is no USB Flash drive to store the image. https://sites.google.com/site/ryzen7rig/