Lenovo B475e User Manual page 58

Prerequisites for the procedure
DANGER
During electrical storms, do not connect the cable to or disconnect it from the telephone outlet
on the wall.
DANGER
Electric current from power, telephone, and communication cables is hazardous. To avoid shock
hazard, disconnect the cables before opening the cover of this slot.
Attention: Before you start installing a PCI Express Mini Card, touch a metal table or a grounded metal
object. This action reduces any static electricity from your body. The static electricity could damage the card.
To replace the PCI Express Mini Card, refer to the instructions for the computer.
• "Lenovo B475e" on page 42
• "Lenovo B575e" on page 43
Lenovo B475e
To replace the PCI Express Mini Card, do the following:
1. Turn off the computer; then disconnect the ac power 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. See "Replacing the battery" on page 31.
4. Loosen or remove the screws
5. If a tool for removing connectors is included in the package with the new card, use it to disconnect the
cables 3 from the card. If no such tool is included, disconnect the cables by picking up the connectors
with your fingers and gently unplugging them. Then remove the screw
42
User Guide
1 , and then remove the cover 2 .
4 and the card pops up.