SW USB Series USB Switchers Setup Guide
The Extron SW2 USB, SW4 USB, and SW4 USB Plus are two- and four-input USB switchers that allow
switching between multiple host devices and USB peripherals. They can be remotely set up and
controlled via a host computer or other control system that is attached to the rear panel RS-232 port.
Simple Instruction Set (SIS™) commands can be issued to the switcher from a computer using the
RS-232 Interface.
6. If using RS-232 pass-through to control an A/V switcher,
Follow these steps to set up and start using the SW USB. (Refer
enter one of the following SIS commands via your
to the SW USB Series User’s Manual for details.)
computer’s RS-232 interface to select a loop mode.
1. Mount the SW USB on a rack shelf or under furniture, if
• E 1LOOP} (Loop 1 mode) — SIS commands are
desired.
sent via an RS-232 interface to the SW USB, which
2. Connect host device(s) to one or more SW USB input
passes them through the RS-232 Pass thru port to the
connectors, using A to B type USB cable in lengths of up to
A/V switcher.
15' (4.5 m).
• E 0LOOP} (Loop 0 mode [default]) — In addition to
3. Connect one or more peripheral USB devices (such as a
SIS commands being sent from the computer’s RS-232
keyboard and/or mouse) to the USB Output Hub ports, using
interface to the A/V switcher via the RS-232 Pass
Thru port, the SW USB sends the SIS input selection
USB cable in lengths of up to 15' (4.5 m).
command X! ! to the A/V switcher via the RS-232 Pass
If host emulation will be used (SW USB Plus only): Attach
Thru port, regardless of the method of input selection
a standard keyboard and/or mouse to output port 3 and/or
(contact closure, front panel button, or SIS command).
4, and set the appropriate DIP switch(es) to On. (If host
7. If desired, connect a 2-button or 4-button contact closure
emulation is not used, connect devices to any desired port.)
device to the SW USB’s Contact port.
4. If desired, connect an RS-232 cable to the SW USB’s RS-232
8. If using a different external power supply from the provided
port and to a host computer or control system.
one, wire the two-pin captive screw connector to the power
N The RS-232 computer or control system should not
supply.
be one of the source devices connected to any of the
9. Power on the system components in the following order:
input ports.
a. USB peripheral device(s)
5. If desired, connect an external Extron A/V switcher to the
b. The SW USB switcher
RS-232 Pass Thru port. This switcher can then be controlled
by commands sent via this port.
c. The host device(s)
Mouse
Keyboard
RS-232
Extron
SW4 USB Plus
2
-23
RS
TS
PU
B
HU HOSTION
AT
UL
EM
B3
UT
BO
USB Switcher
US
B2
US
US
B4
MO
ON
E
US
ON
Tx
Rx
1
T
AC
NT
CO 3 4
2
Tx
2
-23
RS THRU
SS
PA
RD
F
OF YBOA
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US
B1
US
TS
PU
ED
IN
PC
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B SW
US
PC
R
WE
PO X
PC
PC
4
3
RS-232
Control System
+
USB
Ac
Extron
SW4 USB
USB Switcher
:
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Vid
D l
RE nne
a
Ch
l
nta
rizo
Ho c
n
Sy e
ls
Pu
2
USB
OUT
1
USB
UT
RS-232
Loop-Through
TP
HU
Tx
US
B3
B OU
B2
US
US
Rx
1
CT
NTA
CO 3 4
2
Tx
232 U
RS-THR
S
PAS
US
US
OUT
USB
101
Rx
AUTOH
SWITC
232
RS-
B
USB
01
AAP
VTR0
AAP
102
USB
B4
B1
T
PU
NG
IN
HI
ITC
B SW
Desktop
PC #4
US
PC
PC
PC
PC
4
3
2
1
ER
POW
12V MAX
0.4A
+
Desktop
PC #3
Desktop
PC #1
o
ide
eV
tiv
2
1
12V
A MA
1.5
USB
Interactive Whiteboard
Desktop
PC #2
VGA
Outputs
PC
PC
PC
PC
s
A Ar
4 VG
SW
TE
MO
UT
RE
TP
OU
UT
TP
OU
Extron
SW4 VGA Ars
VGA/Audio Switcher
S
UT
R
L
Connection diagram for an SW4 USB switcher with
an interactive white board
3
INP
1
4
2
0.2A
240V
100-
0Hz
50-6
Extron USA - West
Flat Panel Display
SW4 USB Plus switcher in a KVM
(keyboard/video/mouse) switching application
Headquarters
+800.633.9876
Inside USA / Canada Only
+1.714.491.1500
+1.714.491.1517 FAX
Extron USA - East
Extron Europe
Extron Asia
Extron Japan
Extron China
Extron Middle East
+800.633.9876
+800.3987.6673
+800.7339.8766
+81.3.3511.7655
+81.3.3511.7656 FAX
+400.883.1568
+971.4.2991800
+971.4.2991880 FAX
+1.919.863.1794
+1.919.863.1797 FAX
+31.33.453.4040
+31.33.453.4050 FAX
+65.6383.4400
+65.6383.4664 FAX
Inside USA / Canada Only
Inside Europe Only
Inside Asia Only
Inside China Only
+86.21.3760.1568
+86.21.3760.1566 FAX
68-1679-01
Rev. A
01 09