Replacing an M.2 wireless-WAN card
Before you start, print these instructions.
DANGER
During electrical storms, do not perform any replacement and do not connect the telephone 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 an M.2 wireless-WAN card, touch a metal table or a grounded metal
object. This action reduces any static electricity from your body. Static electricity could damage the card.
Some computers might come with an M.2 wireless-WAN card. To replace the wireless-WAN card, do
the following:
1. Disable the built-in batteries. See “Disabling the built-in battery” on page 73.
2. Close the computer display, and turn the computer over.
3. Remove the battery pack. See “Replacing the battery pack” on page 75.
4. Loosen the screws that secure the base cover assembly
1
. Then remove the base cover assembly
2
.
Chapter 6
.
Replacing devices
87
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