This is also strange to me. On some mobo's they tell you to swap the jumper to the other pin which resets the CMOS then switch it back before you power it on because it can damage the board. With this board, you swap the jumper and then turn it on and you wind up in CMOS when it boots. However, my keyboard was still not working while in CMOS.
So, I unplugged everything and took out the battery. Waited a while, then plugged everything back in but I left the battery out. Then powered it on. I wound up back in CMOS again and the keyboard still did not work. So, I unplugged everything again and put the battery back in.
I think it did reset CMOS though. Because now it says that there was a battery failure and that there is a CMOS checksum error and something about the time being not set. I also unplugged my hard drive and it tried to boot off the network. So, it seems to work OK. It still boots the hard drive when it is plugged in.
After all my poking and prodding, I am thinking that maybe it needs a certain type of USB keyboard in order to have a working keyboard at boot. I know that some USB devices have to have drivers before the computer knows what to do with them. I'm thinking that may be the case with my keyboard but not sure. Maybe the mobo simply does not power up the USB ports at boot. But then that doesn't really make any sense either.