User's Manual

Upgrades Modem Card - 1
Modem Card
Before you begin, remove
the following:
• Main battery
• I/O door
• Top case
Caution: The PowerBook
140/145/145B/170
contains CMOS devices that
are very susceptible to ESD
damage. To prevent ESD
damage, wear a grounding
wriststrap. Review the ESD
precautions in Bulletins/
Safety.
Modem Card