Sorry to necro such an old thread, but I ended up getting one of these boards, and the IPMI password was not any defaults. However, I was able to exploit a vulnerability with IPMI tool, and created a backdoor admin account, and was able to then get into the web interface and reset the admin password. I tried brute forcing it with kali linux but it was going to take over 1300 hours... I don't know what the password was, but IPMI tool was pretty easy, with this guide:
A Penetration Tester's Guide to IPMI and BMCs I figured if anyone else wanted to try this board, I should share this info.
My board didn't support V2 cpus, so I have mine running my old E5 2670s from back when the dual xeon 2011 craze first started. Now if there was a way to find what kind of BIOS update it needs to support V2 CPUs, this board might be one of the best value out there. The one I picked up was in a 1u case, with dual hot swap 650 watt PSUs, that are 80 Plus Platinum, and it came with 8 2.5" drive trays, so the mobo has 2 SAS connectors, plus 1 10GB SFP+. I got it for $110 shipped from ebay,
CHENBRO RM13108 1U BAREBONE SERVER B800G2/10G SYSTEM BOARD 2x HEATSINK 2x PSU | eBay. The listing said no trays, but mine came with them so YMMV.