yes, USB2.
I have managed to upgrade to Monterey. I had to reset NVRAM every time there was a new step in the installation.
NOw, after the upgrade I can only reach the system login page if I do a NVRAM reset first.
Also, the graphics are ''gone'', I have only one monitor out of 3 working.
Any ideas?
Fixed the Graphic problem by using the Geforce-Kepler-Pacher application.
Now I need to see if I can figure it out the boot thing.
I have noticed that if I keep trying without resetting nvram, it will eventually boot. Last message I can see on the screen is something to do with AppleKeyStore, something like kernel_relay_enable= 0