CompTIA A+ Core 1 (220-1201)HardwareEasy
A technician is installing a new motherboard into a computer case. Which of the following components must be properly aligned and secured to the chassis to prevent the motherboard from short-circuiting against the metal case?
- AExpansion slots
- BI/O shield
- CScrews
- DStandoffs
Show answer & explanationAnswer & explanation
Correct answer: D. Standoffs
Standoffs are small, threaded spacers that elevate the motherboard from the computer case, preventing electrical contact between the motherboard's circuits and the metal chassis, which would otherwise cause a short circuit.
Why the other options are wrong
- A. Expansion slots are where expansion cards are inserted and are part of the motherboard, not for preventing shorts against the case.
- B. The I/O shield covers the rear ports and protects against dust, but doesn't prevent short circuits.
- C. Screws secure the motherboard to the standoffs, but the standoffs themselves provide the crucial spacing.
Motherboard Standoffs
Small, metal or plastic spacers used to mount a motherboard to a computer case, providing clearance and preventing electrical shorts.
- Elevate the motherboard from the chassis.
- Prevent short circuits.
- Typically threaded for screws.
Memory trick: Standoffs stand off shorts.