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AC450NX Rack Server System Product Guide
24
Controls and Indicators
Item Feature Description
Front Panel
A Power switch When pressed, it turns on or off the DC power inside the server.
B Reset switch When pressed, it resets the server and causes the power-on self test
(POST) to run.
C NMI switch When pressed, it causes a nonmaskable interrupt. This switch is
recessed behind the front panel to prevent inadvertent activation. It
must be pressed with a narrow non-conductive tool (not supplied).
D Power LED (green) When lit continuously, it indicates the presence of DC power in the
server. It goes out when the power is turned off or the power source
is disrupted.
E Power fault LED (yellow) When lit continuously, it indicates a power supply failure.
F Cooling fault LED (yellow) When lit, it indicates a fan failure has been detected in the server.
G Drive fault LED (yellow) When lit continuously, it indicates an asserted fault status on one or
more hard disk drives in the hot-docking bay. When flashing, it
indicates drive reset in progress.
H Front panel LCD It displays information about processor type and failure codes.
I SCSI drive hot-docking
bays
Two SCSI hot docking bays for 3.5-inch x 1.0 inch or 1.6-inch SCSI
hard drives.
Status LEDs for SCSI Drives in Hot-docking Bays
J Drive fault LED (yellow) When lit continuously, it indicates an asserted fault status on one or
more hard disk drives in the hot-docking bay. When flashing, it
indicates drive reset in progress.
K Drive activity LED (green) When flashing, it indicates drive activity.
L Drive power LED (green) When lit continuously, it indicates the presence of the drive and power
on the drive.
CD-ROM Drive
M Open/close button When pressed, it opens or closes the CD tray.
N Activity LED When lit, it indicates the drive is in use.
O Volume control It adjusts the volume of headphones or speakers.
P Headphone jack It provides a connection for headphones or speakers.
3.5-inch Floppy (Diskette) Drive
Q Activity LED When lit, it indicates the drive is in use.
R Ejector button When pressed, it ejects the diskette.