System-error LED: When this amber LED is lit, it indicates that a system error hasoccurred. Use the diagnostic LED panel and the system service label on the insideof the left-side cover to further isolate the error. See the Problem Determination andService Guide on the IBM System x Documentation CD for additional information.USB 1 connector: Connect USB devices to these connectors.USB 2 connector: Connect USB devices to these connectors.DVD-eject button: Press this button to release a CD or DVD from the DVD drive.Hard disk drive status LED: When this LED is lit, it indicates that the associatedhard disk drive has failed. If an optional RAID adapter is installed in the server andthe LED flashes slowly (one flash per second), the drive is being rebuilt. If the LEDflashes rapidly (three flashes per second), the controller is identifying the drive.Hard disk drive activity LED: When this LED is flashing, it indicates that the driveis in use.Hard disk drive status LED: On some server models, each hot-swap hard diskdrive has a status LED. When this LED is lit, it indicates that the drive has failed. Ifan optional IBM ServeRAID controller is installed in the server, when this LED isflashing slowly (one flash per second), it indicates that the drive is being rebuilt.When the LED is flashing rapidly (three flashes per second), it indicates that thecontroller is identifying the drive.DVD drive activity LED: When this LED is lit, it indicates that the DVD drive is inuse.Chapter 1. The System x3500 server 9
