Extron Electronics SW USB Setup Guide

SW USB Series USB Switchers Setup Guide

OUTPUT

REMOTE

OUTPUT

LR

SW4 VGA Ars

100-240V 0.2A

50-60Hz

INPUTS

1

2

3

4

USB SWITCHED INPUTS

USB OUTPUTS HUB

Tx

Tx Rx

RS-232

RS-232

PASS THRU

USB 3

USB 1

USB 2

USB 4

1.5A MAX

12V

POWER

+

PC 1

PC 2

PC 3

PC 4

MOUSE

ON

KEYBOARD

ON

OFF

HOST

EMULATION

CONTACT

1

2

3

4

Flat Panel Display

Extron
SW4 VGA Ars

VGA/Audio Switcher

Desktop
PC #1

Desktop
PC #3

Desktop
PC #4

RS-232
Loop-Through

Extron
SW4 USB Plus

USB Switcher

USB

RS-232

RS-232
Control System

Mouse

Keyboard

VGA
Outputs

Desktop
PC #2

USB SWITCHING INPUT

Tx

Tx Rx

RS-232

CONTACT

1

2

3

4

RS-232

PASS THRU

USB OUTPUT HUB

USB 3

USB 1

PC 1

PC 2

PC 3

PC 4

USB 2

USB 4

0.4A MAX

12V

POWER

+

AAP 102

AUTO

SWITCH

USB OUT 1

USB OUT 2

USB 101 Rx

Extron
SW4 USB

USB Switcher

USB

Interactive Whiteboard

USB

USB

VTR001 AAP

Video:

RED

Channel

Horizontal
Sync
Pulse

Active Video

PC PC PC PC

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+65.6383.4664 FAX

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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.

Follow these steps to set up and start using the SW USB. (Refer
to the SW USB Series User’s Manual for details.)

1. Mount the SW USB on a rack shelf or under furniture, if
desired.

2. Connect host device(s) to one or more SW USB input
connectors, using A to B type USB cable in lengths of up to
15' (4.5 m).

3. Connect one or more peripheral USB devices (such as a
keyboard and/or mouse) to the USB Output Hub ports, using
USB cable in lengths of up to 15' (4.5 m).

If host emulation will be used (SW USB Plus only): Attach

a standard keyboard and/or mouse to output port 3 and/or
4, and set the appropriate DIP switch(es) to On. (If host
emulation is not used, connect devices to any desired port.)

4. If desired, connect an RS-232 cable to the SW USB’s RS-232
port and to a host computer or control system.

N

The RS-232 computer or control system should not

be one of the source devices connected to any of the
input ports.

5. If desired, connect an external Extron A/V switcher to the
RS-232 Pass Thru port. This switcher can then be controlled
by commands sent via this port.

6. If using RS-232 pass-through to control an A/V switcher,
enter one of the following SIS commands via your
computer’s RS-232 interface to select a loop mode.

E

•

1LOOP} (Loop 1 mode) — SIS commands are
sent via an RS-232 interface to the SW USB, which
passes them through the RS-232 Pass thru port to the
A/V switcher.

E

•

0LOOP} (Loop 0 mode [default]) — In addition to
SIS commands being sent from the computer’s RS-232
interface to the A/V switcher via the RS-232 Pass
Thru port, the SW USB sends the SIS input selection
command X! ! to the A/V switcher via the RS-232 Pass
Thru port, regardless of the method of input selection
(contact closure, front panel button, or SIS command).

7. If desired, connect a 2-button or 4-button contact closure
device to the SW USB’s Contact port.

8. If using a different external power supply from the provided
one, wire the two-pin captive screw connector to the power
supply.

9. Power on the system components in the following order:

a. USB peripheral device(s)
b. The SW USB switcher
c. The host device(s)

SW4 USB Plus switcher in a KVM
(keyboard/video/mouse) switching application

Connection diagram for an SW4 USB switcher with
an interactive white board

68-1679-01

Rev. A

01 09