Put on the die, but only expose on the $$$$ builds using it?
Maybe it's buggy or something? Unreliable? Use causes overheating or RF interference issues?
Maybe IBM added it for project X, and then project X got cancelled, and everyone else forgot it was ever there...
The article mentions that it is brought out to the connector, multiplexed with the monitor ID pins.
Maybe it's buggy or something? Unreliable? Use causes overheating or RF interference issues?
Maybe IBM added it for project X, and then project X got cancelled, and everyone else forgot it was ever there...