Quick Reference Guide 23

Desktop Computer — Back View

7hard-drive
activity light
This light flickers when the hard drive is being accessed.
8headphone
connector
Use the headphone connector to attach headphones and
most kinds of speakers.
9microphone
connector
Use the microphone connector to attach a microphone.
10 drive bay This bay accommodates an optional floppy drive, media
card reader, or second hard drive.
11 optical drive
(optional)
Insert an optical drive (if supported) into this bay.
1card slots (3) Access connectors for any installed PCI and PCI Express
cards.
2back-panel
connectors
Plug serial, USB, and other devices into the appropriate
connectors (see "Desktop Computer — Back-Panel
Connectors" on page 24).
3power connector Insert the power cable.
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1 2 3 4
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