Can I access the BIOS from the COM Port

Yes, you can.  The Vault’s COM port is a hardware redirect from the video port, so you can access the BIOS.  Some customers never even use the video ports, only the COM ports!

Quick note: The COM port speed is 115200

For more info on how to use the COM port, see this page: http://protectli.com/kb/com-port-tutorial/