Auto-adjust
the
external
monitor
occasionally
to
realign
its
settings
with
the
video
output
of
the
USB
Port
Replicator.
This
action
fixes
most
of
the
issues
related
to
the
quality
of
the
video
on
the
external
monitor.
Refer
to
your
notebook
computer
user's
guide
for
instructions
on
the
auto-adjust
procedure.
4.
The
external
monitor
connected
through
the
USB
Port
Replicator
is
flickering.
Flickering
is
usually
associated
with
CRT
monitors
using
a
low
refresh
rate.
Always
try
and
use
the
maximum
refresh
rate
available:
v
In
the
Extended
mode,
increase
the
refresh
rate
of
the
external
monitor.
v
In
the
Mirror
mode,
increase
the
refresh
rate
of
your
notebook
computer
screen,
which
in
turn
increases
the
refresh
rate
of
the
external
monitor.
For
more
information
about
the
supported
refresh
rates,
see
“Adjusting
Video
Settings”
on
page
10.
5.
You
cannot
use
ThinkVantage
®
Presentation
Director
to
change
your
ThinkPad
®
display
settings
when
you
attach
external
monitors
on
both
USB
Port
Replicator
VGA
port
and
ThinkPad
VGA
port.
ThinkVantage
Presentation
Director
cannot
be
used
for
ThinkPad
display
settings
when
the
USB
Port
Replicator
connected.
To
set
up
the
display
property
for
multiple
external
monitor,
do
the
following:
v
To
change
the
display
settings
of
the
external
monitor
attached
on
USB
Port
Replicator,
click
the
USB
Port
Replicator
icon
in
system
tray
and
set
up
in
the
popup
setting
menu.
v
To
change
the
display
settings
of
the
external
monitor
attached
on
ThinkPad
VGA
port,
do
one
of
the
following:
–
For
Windows
Vista,
right-click
the
blank
area
on
the
desktop,
click
Property
to
open
the
Display
properties
window
and
set
up
there.
–
For
Windows
XP,
right-click
the
blank
area
on
the
desktop,
click
Personalize
to
open
the
Display
properties
window
and
set
up
there.
Audio
You
cannot
hear
anything
through
your
notebook
computer
speakers
or
you
cannot
use
Microphone-in
port
or
audio-out
port
on
the
notebook
computer.
Lenovo
notebook
computers
default
to
the
USB
audio
when
the
USB
Port
Replicator
is
connected,
disabling
your
notebook
computer
built-in
speakers
and
audio
ports.
To
enable
your
notebook
computer
built-in
speakers
and
audio
ports:
1.
Open
the
Control
Panel,
select
Sounds
>
Audio
Devices
.
2.
Do
one
of
the
following:
v
For
Windows
Vista,
–
Select
the
Playback
tab,
and
then
select
a
device
that
is
not
USB
Audio.
–
Select
the
Recording
tab,
and
then
select
a
device
that
is
not
USB
Audio.
v
For
Windows
XP,
select
the
Audio
tab,
and
then,
under
Sound
Playback
and
Sound
Recording,
select
a
device
that
is
not
USB
Audio.
Note:
To
enable
this
change,
close
the
application
currently
using
the
audio
device
and
restart
it.
14
Lenovo
Enhanced
USB
Port
Replicator
User's
Guide
Summary of Contents for 43R8770 - Enhanced USB Port Replicator
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