Hot Heak Sink on MBD-X10SDV-TLN4F-O when turned off

[FQB]

Been setting up a new server (MBD-X10SDV-TLN4F-O) and just noticed this morning that the heatsink (not the CPU heat sink but the one behind the VGA connector) was actually hot to touch even when I had turned off the power. I did not pull the power plug, just had shut it down.

I can't find anywhere in the documentation as to what the purpose of this heat sink is and if this is expected behavior?

 

[cthulolz]

That chip and the 10g ports next to it are missing in the -F version of the board, so I'd guess it's the 10g network chip.

 

[T_Minus]

I've noticed this, and assumed it was for IPMI or WOL or some other remote when powered-off usage.

They also have a green (if I recall) flashing light when off that I didn't notice until daylight savings changed ;(