v Rack release latches: Press the latches on each front side of the server toremove the server from the rack.v Hard disk drive activity LEDs: This LED is used on hot-swap SAS or SATAhard disk drives. Each hot-swap hard disk drive has an activity LED, and whenthis LED is flashing, it indicates that the drive is in use.v Hard disk drive status LEDs: This LED is used on hot-swap SAS or SATA harddisk drives. When this LED is lit, it indicates that the drive has failed. If anoptional 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.v Optional DVD eject button: Press this button to release a DVD or CD from theoptional DVD drive.v Optional DVD drive activity LED: When this LED is lit, it indicates that theoptional DVD drive is in use.v Operator information panel: This panel contains controls and LEDs that provideinformation about the status of the server. For information about the controls andLEDs on the operator information panel, see “Operator information panel.”v Operator information panel release latch: Press the blue release latch to pullout the light path diagnostics panel and view the light path diagnostics LEDs andbuttons. See “Light path diagnostics panel” on page 15 and the ProblemDetermination and Service Guide for more information about the light pathdiagnostics.v Video connector: Connect a monitor to this connector. The video connectors onthe front and rear of the server can be used simultaneously.Note: The maximum video resolution is 1600 x 1200 at 75 Hz.v USB connectors: Connect a USB device, such as a USB mouse or keyboard toany of these connectors.Operator information panelThe following illustration shows the controls and LEDs on the operator informationpanel.14 IBM System x3550 M4 Type 7914: Installation and User’s Guide
