What is the purpose of status LEDs in a server component?

• A. Re-route PCIe lanes to different orientations.
• B. A management network device.
• C. Visual indicators for component health, identify, attention, and activity status.
• D. Provide power supply redundancy.

Answer: (C)

Status LEDs on server components provide at-a-glance visual cues about the part’s condition. They’re designed to quickly convey four kinds of information: health (is the component functioning normally), identify (a light you can trigger to locate the part in a rack), attention or warning (there’s a fault or degraded condition), and activity (data transfer or operation ongoing). This lets technicians and operators triage hardware without opening panels or connecting management software, which is especially valuable in busy data centers.

The other ideas don’t fit the role of LEDs: rerouting PCIe lanes is a hardware data-path function, a management network device is a separate component, and power supply redundancy is about reliability design rather than a visual indicator.