IBM THINKPAD X4 User Manual
Page 10
DANGER
Class
1
laser
products
are
not
considered
hazardous.
The
design
of
the
laser
system
and
the
optical
storage
drive
ensures
that
there
is
no
exposure
to
laser
radiation
above
a
Class
1
level
during
normal
operation,
user
maintenance,
or
servicing.
Some
drives
contain
an
embedded
Class
3A
laser
diode.
Note
this
warning:
DANGER
Do
not
open
the
optical
storage
drive
unit;
no
user
adjustments
or
serviceable
parts
are
inside.
Use
of
controls,
adjustments,
or
the
performance
of
procedures
other
than
those
specified
might
result
in
hazardous
radiation
exposure.
Emits
visible
and
invisible
laser
radiation
when
open.
Avoid
direct
eye
exposure.
Do
not
stare
into
the
beam
or
view
it
directly
with
optical
instruments.
x
ThinkPad
®
X4
Dock
User’s
Guide