58 Advanced Features
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NOTICE: To disconnect a network cable, first unplug the cable from your computer and then
unplug it from the network wall jack.
3
Disconnect any telephone or telecommunication lines from the computer.
4 Disconnect your computer and all attached devices from electrical outlets, and then
press the power button to ground the system board.
5 If you have installed a padlock through the padlock ring on the back panel, remove the
padlock.
CAUTION: To guard against electrical shock, always unplug your computer from
the electrical outlet before opening the cover.
NOTICE: Before touching anything inside your computer, ground yourself by touching an
unpainted metal surface, such as the metal at the back of the computer. While you work,
periodically touch an unpainted metal surface to dissipate any static electricity that could harm
internal components.
6
Open the computer cover.
7 Install the TAPI-compliant modem card:
a Connect the 4-pin TAPI cable to the TAPI system board connector.
To locate the TAPI connector on the system board, see the system board
components illustration for your computer (for the Dell Precision 450 computer,
see "System Board Components" or for the Dell Precision 650 computer, see
"System Board Components").
b Connect the other end of the cable to the TAPI connector on the modem card.
To locate the TAPI connector on the card, see the documentation for the card.
8 Close the computer cover.
9 Reconnect the computer and devices to electrical outlets, and turn them on.
10 Install the appropriate modem driver and voice program.
For more information, see the manufacturer’s documentation and your Microsoft
®
Windows
®
documentation.
Installing a TAPI Sound Card
You can connect your modem to a TAPI-compliant sound card connector (typically labeled
TAD) and then use the audio capabilities as a speakerphone.
1 Shut down the computer through the Start menu.
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