Baseboard version is the board revision Bios version is listed under BIOS version/Date. Should be 6 lines up. You can also enter the motherboard BIOS and see the BIOS version listed there.  
I may be looking incorrectly at where to find my latest BIOS version, but I was under the impression it was by looking under MSINFO. In which case, I see BIOS Mode: UEFI; BaseBoard Manufacturer: Alienware; BaseBoard Product: 0PGRP5; BaseBoard Version: A02.   This left me with the impression that I have an extremely outdated BIOS.   So I went to update the BIOS here [URL] and even used my service tag number to make sure I was getting the right one. It recommended A07, being the newest.   However, when I went to install, the BIOS installer told me I have a newer version: A12, and therefore it can't downgrade the BIOS.   The BIOS must be as current as possible because I just ordered a CPU to upgrade my i5 (already checked compatibility, but I have to have a BIOS newer than A06). I've very concerned that something is being read wrong, or maybe I'm looking in the wrong place. I would appreciate feedback on where I can see the updated BIOS versions if not in MSINFO. Thank you. I have a Windows 10, 64-bit.
Alienware X51 R2 BIOS update problem