Possibly a nooby question, but I've seen two answers to this online and thought I'd ask the awesome experts here. 
I'm making a new PC, but I only have a wireless mouse and keyboard (and the USB dongle that goes with it)
So when I power on for the first time, will I be able to get into the BIOS and change the boot devices and all other kinds of tinkering or do I need to get a ps2/USB keyboard from somewhere?
My mobo is the asrock Z77 pro4M if that helps.
Cheers.

I'm making a new PC, but I only have a wireless mouse and keyboard (and the USB dongle that goes with it)
So when I power on for the first time, will I be able to get into the BIOS and change the boot devices and all other kinds of tinkering or do I need to get a ps2/USB keyboard from somewhere?
My mobo is the asrock Z77 pro4M if that helps.
Cheers.