Dell DR4000 Owner's Manual page 13

Item Indicator, Button,
or Connector
3 NMI button
4 System identification
button
5 Hard drive
6 System identification
panel
7 USB connector
8 Video connector
Icon Description
Used to troubleshoot software and device
driver errors when using certain operating
systems. This button can be pressed using
the end of a paper clip.
Use this button only if directed to do so
by qualified support personnel or by the
operating system's documentation.
The identification buttons on the front
and back panels can be used to locate
a particular system within a rack.
When one of these buttons is pushed, the
blue system status indicator on the back
blinks until one of the buttons is pushed
again.
Twelve 3.5 inch hot-swappable SAS
drives.
A slide-out panel for system information
including the Express Service tag,
embedded NIC MAC address, and
iDRAC6 Enterprise card MAC address.
Connects USB devices to the system.
The port is USB 2.0-compliant.
Connects a monitor to the system.
About Your System
13