Communication Daughter
Card slot
Expansion slot cover
Mini PCI Card slot
Attention
for
the
authentication
mechanism
If
you
install
an
unauthorized
wireless
LAN
Mini-PCI
Card
or
RF
CDC
module
that
is
not
approved
to
use
for
the
ThinkPad
X40
Series
computer,
the
computer
does
not
start,
but
only
displays
an
error
message
and
emits
beeps.
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