A. The motherboard connector type
B. Device-connector types and quantities
C. The wattage rating
D. The output voltage selector switch setting
The correct answer is D.
The only voltage selector switch you might encounter is the AC input switch. The output of the power supply is always the same standard selection of five DC voltages: +/-12 VDC, +/-5 VDC, and +3.3 VDC.
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