Lenovo ThinkPad T500 User Manual page 13

Replacing the PCI Express Mini Card for wireless WAN (ThinkPad T400)
Before you start, print these instructions.
To replace the PCI Express Mini Card, do as follows:
1. Turn off the computer; then disconnect the AC adapter and all cables from the computer. Wait for a few
minutes, till the inside of the computer cools, before you start the following procedures.
2. Close the computer display, and turn the computer over.
3. Remove the battery.
4. Remove the keyboard.
5. Lift up the bracket, as shown in the drawing.
6. If a tool for removing connectors is included in the package with the new card, use it to disconnect the
cables from the card (1) . If no such tool is included, disconnect the cables (1) by picking up the
connectors with your fingers and gently unplugging them. Remove the screws (2) . The card pops up
(3) .
Note: Depending on the system configuration of your computer, the card may have only one
connector.
7. Remove the card.