Dell Dimension H7228 Owner's Manual page 54

breakaway hinges (2)
1
IEEE 1394 connector
2
CD or DVD
3
drive-activity light
PC Card connectors (2)
4
USB 2.0 connectors (2)
5
6 headphone connector
hard-drive activity light
7
power button
8
front-panel door
9
54
Adding Parts
To prevent damage to your computer, the front door is designed to "break away" if it is
opened too far. To reattach the front door, see page 57.
Attach high-speed serial multimedia devices, such as digital video cameras.
(This feature is only available on computers with an optional IEEE 1394 connector.)
The drive activity light is on when the computer reads data from the CD or DVD drive.
Connect a PC Card into any of the PC Card connectors (available on computers with a
PC Card option). Use the PC Card connectors for 16-bit PCMCIA cards only. Do not
use a 32-bit CardBus.
Use the front USB connectors for devices that you connect occasionally, such as
joysticks or cameras.
It is recommended that you use the back USB connectors for devices that typically
remain connected, such as printers and keyboards.
NOTICE:
This computer supports the use of a USB hub. However, do not connect two or
more USB hubs to a USB connector. Doing so may cause the computer to
unexpectedly restart.
NOTE:
If you attach a USB device that was not included in your original computer order,
you may need to install a specific driver to make the device work. Check the
documentation that came with the device or contact the USB device manufacturer for
more information.
Use the headphone connector to attach headphones and most kinds of speakers.
The hard-drive activity light is on when the computer reads data from or writes data to
the hard drive. The light might also be on when devices such as your CD player
are operating.
Press to turn on the computer.
NOTICE:
To avoid losing data, do not use the power button to turn off the computer.
Instead, perform an operating system shutdown.
Open the door to use the front-panel connectors.
NOTE:
The front door is removable; if you remove it or accidentally knock it off its hinges,
it snaps back in place. For instructions on how to reattach the door, see page 57.