Rextron AcroGear DAG12 User manual

Package Contents:
DAG12
2-Port AcroGear (DAG12) x 1
User’s manual x 1
Rubber foot pad x 1 set
DAG14
4-Port AcroGear (DAG14) x 1
User’s manual x 1
Rubber foot pad x 1 set
Copyright Rextron Technology, Inc.
PP5-T7300-000
Printed in Taiwan

Table of Content
Introduction
Overview.......................................................... 1
Features .......................................................... 2
System Requirements
Console side.................................................... 3
Computer side ................................................. 3
Installations
PC BIOS Notice............................................... 4
Console Connection ........................................ 5
Computers Connection.................................... 6
Operations
Front Panel operation...................................... 7
Rack Mount Kit ................................................ 9
Appendices
Specifications................................................. 10
Troubleshooting ...........................................11
Please read this manual thoroughly and
follow the Installation procedures to prevent any
damage to the AcroGear or any connecting
device.

1
----------------- Introduction
Overview
The DAG12 and DAG14, fully compatible with USB
specification, are combination of USB KVM
(keyboard/Video/mouse) switch and USB peripherals
sharing device. With the DAG12 or DAG14, you can
easily operate up to 2 or 4 PCs, G3/G4 Macs, or iMacs
respectively from 1 USB keyboard, 1 USB mouse, and
1 monitor saving you space, time, equipment and
money. Its peripheral sharing function enables you to
share more USB peripherals among all computers.
Installation is as easy as connecting USB A-B cables
to computers and to the DAG switch. Computer
selecting is as easy as front panel button pressing.
The built-in USB hub ensures smooth switching from
one computer to the other. The DAG switches
provide the easiest way to manage multiple computers
with USB interface and share USB peripherals among
computers. No more tangled cables and messy
working environment; let the DAG switch do the
computer switching for you.

2
Features
 Manage 2 or 4 PCs, G3/G4 Macs, or iMacs from
one USB keyboard, mouse and monitor with
DAG12 and DAG14 respectively.
 2 or 4 computers share up to 3 or 4 different USB
peripherals with DAG12 and DAG14 respectively.
 Front panel push buttons for easy computer
selection.
 No drivers needed for keyboard and mouse
operation.
 Support keyboard and mouse plug-n-play.
 DVI interface.
 Buzzer sound for computer switching confirmation.
 Activate Auto Scan by front buttons pressing.
 Selectable Scan Time interval.
 Support the DVI-I monitor.
 Saves time, space, equipment and power.
 USB self-power operation.
 No software required.

3
----------------- System Requirements
Console side
One DVI monitor
One USB keyboard
One USB mouse
Computer side
Each USB-enabled computer must be connected to
the DAG switch by
One DVI-I cable for monitor, as shown in figure 1.
Figure 1. DVI-I cable
One USB A-B cable with Type-A and Type-B plug
for USB devices, as shown in figure 2.
Figure 2. USB A-B cable

4
----------------- Installation
PC BIOS Notice
The following BIOS setup changes are necessary for
PC users and not necessary for Mac users:
1. In STANDARD CMOS, set HALT ON ERROR to
ALL BUT KEYBOARD.
2. In PNP AND PCI SETUP, set PNP OS INSTALLED
to YES and set USB IRQ to ENABLED.
Note: The DAG switch is applicable for USB keyboard
and mouse switching from one computer to the
other. If you plan to share other peripherals
such as a CCD camera, printer or scanner, it is
required to shut down the driver of the computer
before switching to another computer.
Because port switching is equivalent to
unplugging the USB cable from one computer
and plugging it to another one, some USB
drivers check attached USB peripherals all the
time and do not accept plug-n-play function.

5
Console Connection
Before installation, make sure all devices and
computers to be connected to the DAG switch have
been turned off.
Plug a monitor to the Console's DVI-I port; plug a USB
keyboard and a USB mouse to any two of the
Console's USB ports as shown in figure 3.
Figure 3. Console Connection

6
Computers Connection
Use a male-to-male cable to connect from a
computer's DVI-I port to DAG's DVI-I port of PC side,
as shown in figure 4.
Use a USB A-B Cable to connect from the DAG's USB
port (B connector, square connector) to the USB port
on the corresponding computer (A connector, flat
connector), as shown in figure 4.
Figure. 4 Computer Connection
Now, you can turn on all devices and computers.

7
----------------- Operations
Front Panel
1. On-line LED & Selected LED
When the LED turns green, the connected
computer is powered-on. When a computer is
selected, its corresponding red LED illuminates.
2. Pushbuttons
Each computer has a button associated with it on
the front panel for selection.
Auto Scan
Auto Scan automatically scan through computers one
by one in a fixed interval (see Scan Time below).
Note: keyboard and mouse are not operable during
Auto Scan.
Scan Time
It sets the scan interval for Auto Scan. The Scan
Time options are 3, 8, 15 and 30 seconds.
Note: Scan Time is automatically set to the default of
3 seconds when the DAG switch loses power.

8
For DAG12
To activate the Auto Scan, press and hold the
pushbutton down for 2 seconds till you hear a long
beep followed by a short beep. To exit from it tap the
pushbutton again.
To change the Scan Time interval, press and hold the
pushbutton for 4 seconds till you hear two long beeps.
Then by tapping the pushbutton each time, the DAG12
responds with 1, 2, 3 or 4 beeps corresponding to 3, 8,
15 or 30 seconds respectively. Once set, leave the
DAG12 as it is and it will automatically return for
normal operation.
For DAG14
To activate Auto Scan, press down front panel push
buttons "3" and "4" simultaneously. The port LED
flashes during Auto Scan. Auto Scan is effective for
powered-on computers only. To exit the Auto Scan
mode, just tap any one of the pushbuttons.
To change the Scan Time interval, press both front
panel buttons "1" and "2" simultaneously. The
DAG14 beeps 1, 2, 3 or 4 times for Scan Time of 3, 8,
15 or 30 seconds respectively.

9
----- Rack Mount Kit for DAG14 (optional)
The figure below shows how to attach optional
mounting brackets and cable support (RMK04) to the
DAG14 for standard 19-inch rack cabinet.

10
----------------- Appendices
Specifications
Specification DAG12 DAG14
No. of computers supported 2 4
Front panel push button 1 4
Hot plug-and-play Yes
Automatic scan interval 3, 8, 15, 30 seconds
Cable Length (Max) 5M(15ft) for USB
Computer ON-LINE LED 2 4
Computer selected LED 2 4
Monitor Type DVI
Computer peripheral connector
Monitor
USB Type B x 2
DVI-I female x 2
USB Type B x 4
DVI-I female x 4
Console peripheral connector
Monitor
USB Type A x 3
DVI-I female x 1
USB Type A x 4
DVI-I female x 1
Weight (g)
(oz.)
420
14.8
900
31.74
H x W x D (mm)
(in.)
size
40 x 124 x 75
1.6 x 4.9 x 2.9
Micro
44 x 220 x 130
1.7 x 8.7 x 5.1
Compact

11
----------------- Troubleshooting
Ensure that all cables are well seated. Label the
cable for each computer to avoid confusion when
connected to the DAG switch.
The DAG switch has built-in power protection that
works automatically when needed. When it works,
USB communication halts and the only way to restart
the DAG switch properly is to remove all power
sources (USB patch cables and power adapter), wait a
few seconds, apply power sources and start again.
Symptom Causes Solutions
Keyboard or
mouse does not
work
 In Auto Scan,
keyboard and
mouse are not
operable.
 Too many
keyboards or
mouse drivers
installed.
 Press any front button
to select a computer,
then use the keyboard
and mouse.
 Remove ALL
unnecessary
keyboards and mouse
drivers.
Newly installed
USB device
does not work.
 Improper device
driver.
 Device
consumes too
much power.
 Device
consumes too
much power
instantaneously.
 Re-install device driver.
 The device should be
self-powered, add a
power adapter to the
device.
 If the device does not
provide power jack,
add a power adapter
with DC5V of less than

12
 Improper device
initialization.
 When DAG
switch works
under
self-power, i.e.,
no power supply
added, it
supports max of
100mA as per
USB spec.
1A current rating to the
DAG switch.
 Be sure the USB cable
is well seated to
ensure communication.
 Remove all power
sources to the DAG by
unplugging all USB
A-B cables and the
power adapter; then
start all over again.
 Select the computer by
pushbutton, restart the
computer and try
again.
Computer
hangs up while
switching
computer.

Device
initialization
takes too much
time.
 Wait at least 5 seconds
before computer
switching to ensure
proper USB
communication.
 Turn off device driver
(not keyboard nor
mouse) before
computer switching.
Auto Scan does
not switch PC
automatically
and NovaView
beeps
 All PCs are off
or only one PC
is turned on.
Scan mode
works for
power-on
computers only.
 Turn computers on.

13
Limited Warranty
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FOR DIRECT OR INDIRECT, SPECIAL, INCIDENTIAL OR
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BUSINESS, OR FINANCIAL LOSS WHICH MAY BE CAUSED
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PAID FOR THE PDOCUDT.
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