Dell OptiPlex 740 - Manual (Page 15)

Quick Reference Guide
15
1 optical drive
(optional) Insert an optical drive (if supported) into this bay.
2 floppy drive
bay (optional) Can contain a floppy drive or a optional media card reader.
3 USB 2.0
connectors (2) Use the front USB connectors for devices that you connect
occasionally, such as joysticks or cameras, or for bootable USB
devices (see
"System Setup" in your online User’s Guide for
more information on booting to a USB device).
It is recommended that you use the back USB connectors for
devices that typically remain connected, such as printers and
keyboards.
4 LAN indicator
light This light indicates that a local area network (LAN)
connection is established.
5 diagnostic
lights Use the lights to help you troubleshoot a computer problem
based on the diagnostic code. For more information, see
"Diagnostic Lights" on page 55.
6 power button Press this button to turn on the computer.
NOTICE:
To avoid losing data, do not turn off the computer
by pressing the power button. Instead, perform an
operating system shutdown. See "Turning Off Your
Computer" in your online User’s Guide for more
information.
NOTICE:
If your operating system has ACPI enabled,
when you press the power button the computer will
perform an operating system shutdown.