Dell LATITUDE D400 - Manual (Page 47)

Adding a Mini PCI Card
If you ordered a Mini PCI card with your computer, the card is already installed.
CAUTION: FCC rules strictly prohibit users from installing 5 GHz (802.11a, 802.11a/b, 802.11a/b/g)
Wireless LAN Mini PCI cards. Under no circumstances should the user install such a device. Only trained
Dell service personnel are authorized to install a 5 GHz Wireless LAN Mini PCI card.
If you are removing and/or installing a 2.4 GHz (802.11b, 802.11b/g) Mini PCI Card, please follow the
instructions noted below. Only products approved for use in your portable computer may be installed.
Approved Mini PCI Cards may be purchased only from Dell.
NOTE: 2.4 GHz Wireless LAN PC Cards may be removed and installed by the user.
CAUTION: Before working inside your computer, read the safety instructions in your System Information
Guide.
1. Ensure that the work surface is flat and clean to prevent scratching the computer cover.
2. Save and close any open files, exit any open programs, and then shut down the computer.
3. If the computer is connected to a docking device (docked), undock it. See the documentation that came with your
docking device for instructions.
4. Disconnect the computer from the electrical outlet.
5. Wait 10 to 20 seconds, and then disconnect any attached devices.
6. Remove any installed PC Cards and the battery.
NOTICE: Handle components and cards by their edges, and avoid touching pins and contacts. Ground yourself by
touching a metal connector on the back of the computer. Continue to ground yourself periodically during this
procedure.
7. Remove the keyboard .
8. If a Mini PCI card is not already installed, go to step 9 . If you are replacing a Mini PCI card, remove the existing card:
a. Disconnect the Mini PCI card from the attached cables.