Contact pads-based chassis type detection

A computing device comprising:

• a circuit board having a first contact pad and a second contact pad disposed at an edge of the circuit board;
• a chassis in which the circuit board is installed, the chassis is of a chassis type, wherein the chassis comprises:
• a circuit board holder to hold the circuit board in a defined position relative to the chassis, wherein the circuit board holder is grounded;
• a chassis detection circuit to generate a first signal and a second signal when the circuit board is engaged with the chassis, wherein the first and second signals are indicative of an electrical contact between the grounded circuit board holder and one of the first contact pad and the second contact pad;
• and
• a controller coupled to the chassis detection circuit to detect the chassis type based on the received first and second signals.

A non-transitory machine-readable storage medium encoded with instructions that, when executed by a processor of a computing device, cause the processor to:

• receive a first signal and a second signal from a first contact pad and a second contact pad, respectively, disposed on an edge of a motherboard in response to the motherboard installed in a chassis having a form factor type, the first and second signals are generated by the first and second contact pads, respectively, based on an interaction with at least one circuit board holder of the chassis that retains the motherboard in a defined position relative to the chassis;
• and
• detect the form factor type of the chassis in response to the received first and second signals;
• and
• control an operating parameter of the computing device based on the form factor type of the chassis.