The TC15 is fitted with an American Megatrends Inc BIOS. Hit the F2 key on power-up to get into it. At the top of the screen it identifies itself as Aptio Setup Utility and lists a 'Core Version' of 5.009 with a build date and time of 06/20/2014 16:52:01.
There was no password set on mine. I don't know if there is a default password.
Normally, as they're designed for quite a narrow deployment in terms of function and hardware, the BIOS of a thin client usually does not have very many parameters you can tweak. The TC15 is unusual in that there are actually a huge number of options quite a few of which I have no idea what they are.
Anyone know what a 'PMIC ACPI OBJECT' is? Do I want it enabled or disabled? What's a 'whitt' setting?
What follows are some of the various BIOS setup screens.