Front panel LEDs
Part number 3500733

The front panel features the chassis lock and five light-emitting diodes (LED).

  1. Chassis lock - Prevents unauthorized access to the front panel controls and to the inside of the chassis.

  2. Power LED - Glows green when the computer is turned on.

  3. Hard disk activity LED - Flashes green when data is read from or written to a hard disk.

  4. Reserved for future use.

  5. Power supply 1 status LED - Glows green when the first power supply module is on and working correctly. Flashes when power from that module is interrupted. This is only used with the optional N+1 redundant power supply.

  6. Power supply 2 status LED - Glows green when the second power supply module is on and working correctly. Flashes when power from that module is interrupted. This is only used with the optional N+1 redundant power supply.