About Your System 17
Back-Panel Features and Indicators
Figure1-3 shows the controls, indicators, and connectors located on the system's back panel.
Figure 1-3. Back-Panel Features and Indicators

Connecting External Devices

When connecting external devices to your system, follow these guidelines:
• Most devices must be connected to a specific connector and device drivers must be installed before the
device operates properly. (Device drivers are normally included with your operating system software or
with the device itself.) See the documentation that accompanied the device for specific installation
and configuration instructions.
• Always attach external devices while your system and the device are turned off. Next, turn on any
external devices before turning on the system (unless the documentation for the device specifies
otherwise).
For information about individual connectors, see "Jumpers and Connectors" on page135. For information
about enabling, disabling, and configuring I/O ports and connectors, see "Using the System Setup Program"
on page 37.
1 center PCI riser (slot 1) 2 left PCI riser (slot 2) 3 left PCI riser (slot 3)
4 power supplies (2) 5 system identification button 6 system status indicator
7 system status indicator
connector
8 NIC2 connector 9 NIC1 connector
10 USB connectors (2) 11 video connector 12 serial connector
13 remote access controller
(optional)
13 12
3
11 10 9 8 7 56
41 2
Book.book Page 17 Friday, February 3, 2006 11:09 AM