NTI VOPEX Series User manual

MAN123 Rev Date 12/17/2019
VOPEX-USBH-2/4
DVI/HDMI USB KVM Splitter with Built-in Hub
Installation and Operation Manual
VOPEX®Series
Front and Rear View of VOPEX-
U
SBH-2

MAN123 Rev Date 12/17/2019
TRADEMARK
VOPEX is a registered trademark of Network Technologies Inc in the U.S. and other countries.
COPYRIGHT
Copyright © 2004-2019 by Network Technologies Inc. All rights reserved. No part of this publication may be reproduced, stored
in a retrieval system, or transmitted, in any form or by any means, electronic, mechanical, photocopying, recording, or otherwise,
without the prior written consent of Network Technologies Inc, 1275 Danner Drive, Aurora, Ohio 44202.
CHANGES
The material in this guide is for information only and is subject to change without notice. Network Technologies Inc reserves the
right to make changes in the product design without reservation and without notification to its users.

MAN123 Rev Date 12/17/2019
TABLE OF CONTENTS
INTRODUCTION.............................................................................................................................................................1
LIMITATIONS..................................................................................................................................................................2
MATERIALS....................................................................................................................................................................2
CONNECTORS AND LEDS............................................................................................................................................2
INSTALLATION...............................................................................................................................................................3
Monitor Connection......................................................................................................................................................3
Mouse Connection.......................................................................................................................................................3
Keyboard Connection..................................................................................................................................................3
CPU Connection..........................................................................................................................................................4
Hub Ports.....................................................................................................................................................................5
Power-Up.....................................................................................................................................................................6
OPERATION ...................................................................................................................................................................7
Keyboard Command Mode..........................................................................................................................................7
Mice and Trackballs with MACs ..................................................................................................................................8
International SUN Keyboards......................................................................................................................................8
Hub Ports.....................................................................................................................................................................9
SPECIFICATIONS ..........................................................................................................................................................9
TROUBLESHOOTING....................................................................................................................................................9
WARRANTY INFORMATION..........................................................................................................................................9
TABLE OF FIGURES
Figure 1- Connect User 1 Keyboard, Mouse, and Monitor.................................................................................................................3
Figure 2- Connect the VOPEX to the CPU ........................................................................................................................................4
Figure 3- Example of configuration with HDMI extenders on input and output ..................................................................................5
Figure 4- Connect other devices to Hub Ports...................................................................................................................................5
Figure 5- Connect the AC adapter to the VOPEX..............................................................................................................................6

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
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INTRODUCTION
The VOPEX-USBH-2 (VOPEX) is a DVI/HDMI and USB KVM Splitter and 3-Port Hub. It enables the control of one USB enabled
CPU through two separate USB keyboards, USB mice, and DVI or HDMI monitors and it enables the connection of 3 additional
USB devices (other than keyboards or mice). Each user is able to have complete control of a CPU (although it is not
recommended to access the CPU more than one at a time as unpredictable results may occur). While the user access is
controlled by three (3) separate modes of operation, both user monitors will show the same image at all times. The 3 hub ports
(for printer, scanner, camera, etc.) will be connected to the CPU at all times.
Options:
A 4-port model (VOPEX-USBH-4) is available supporting up to 4 users.
Types of User Input Devices Supported:
USB keyboard with Windows layout
USB keyboard with SUN layout
USB keyboard with MAC layout
USB Mouse - (up to 3 buttons)
USB IntelliMouse (scroll wheel)
Mouse-Trak trackball
Logitech, Kensington and Microsoft Wheelmouse or Trackball on Mac CPUs with special drivers
Logitech Cordless Elite Duo keyboard and mouse
Crystal Vision keyboard with touchpad
Gyration keyboard/mouse
NTI USB-PS/2 Adapter
NTI USB-SUN Adapter
Types of Shared Devices Supported:
Both low-speed and full speed USB devices are supported.
USB 1.1 (low/full speed) standards.
Video Support:
Compliant with HDMI 1.2, HDCP 1.1 and DVI 1.0 standards. Plug-n-Play specification supported
Supports HDMI CEC
Supports HDTV resolutions up to 1080i and computer resolutions up to 1920x1200.
Types of CPUs Supported:
Any USB CPU supporting USB version 1.0 or above including:
USB WINxx
USB MAC
USB SUN
NTI Extenders Supported:
ST-C6USBH-300 300 Foot HDMI USB KVM Extender
ST-C6USBH-HDBT 328 Foot HDMI USB KVM Extender over HDBase-T

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
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LIMITATIONS
The USB ports on the VOPEX are USB 1.1 compatible. Any USB 2.0 device connected to the VOPEX will be regulated to
USB 1.1 speeds.
MATERIALS
Materials included with this kit:
VOPEX-USBH-2/4 2/4-Port DVI/HDMI USB KVM Splitter
USB-AB-1M-ST 1 Meter Transparent USB A-B Device Cable
DVI-HDMI-3-MM 3' M-M DVI-to-HDMI Video Cable
120 or 240VAC @ 50 or 60Hz-5VDC/3.0A AC Adapter (2-Port Model)
or
120 or 240VAC @ 50 or 60Hz-5VDC/6.0A AC Adapter (4-Port Model)
URL Slip with path to this manual
CONNECTORS AND LEDS
# LABEL CONNECTOR/LED DESCRIPTION
1 I / O Power Switch To power up or power down the VOPEX
2 Power Green LED Illuminates to indicate proper power to the unit
3 User x Green LED For visual indication of the splitter’s operating mode
4 Mode Select Push Button Press to manually switch between operating modes
5 VIDEO IN HDMI Type A female for connecting the video cable from the CPU
6 MONITOR x HDMI Type A female for connection of the user video monitors
7 5VDC 3.0A 2.1x5.5mm Power Jack for connection of power supply
8 HUB PORTS USB type A female for connection of the cables from USB devices
9 USER x DEVICES USB type A female for connection of user USB device(s) (keyboard and mouse)
10 CPU USB type B female for connection of the devices cable from the CPU

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
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INSTALLATION
FYI: It is not necessary to disconnect power to the CPU and monitor(s) before installation.
Monitor Connection
1. Disconnect the monitor cable at the CPU and reconnect it to the "MONITOR 1" port on the VOPEX. (See Fig. 1)
(A second DVI-HDMI-x-MM cable may be required (sold separately)- one has been supplied for connection to the CPU.)
2. Plug a second monitor into the "MONITOR 2" port on the VOPEX.
Mouse Connection
1. Disconnect the mouse at the CPU and reconnect it to one of the female USB type A 'USER 1 DEVICES" ports on the
VOPEX.
2. Connect a second mouse (or optional USB extension cable NTI USB-A+A-5M) to the female USB type A "USER 2 DEVICES"
ports on the VOPEX.
Keyboard Connection
1. Disconnect the keyboard at the CPU and reconnect the keyboard to the remaining female USB type A "USER 1 DEVICES"
port on the VOPEX.
2. Connect a second keyboard (or optional USB extension cable NTI USB-A+A-5M) to the remaining female USB type A "USER
2 DEVICES" ports on the VOPEX.
Figure 1- Connect User 1 Keyboard, Mouse, and Monitor

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
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CPU Connection
1. Connect the male USB type A connector end of the USB-AB-1M-ST cable into the device port on the CPU.
2. Connect the male USB type B connector of the same cable to the "CPU" port on the VOPEX.
3. Connect the male DVI-D connector end of the DVI-HDMI-3-MM into the CPU’s video port. (See Fig. 2)
4. Connect the male HDMI connector end of the DVI-HDMI-3-MM into the "VIDEO" port on the VOPEX.
Figure 2- Connect the VOPEX to the CPU
Note: If your CPU has an HDMI video port instead of DVI, an HDMI-xx-MM cable can be purchased separately from NTI.
Contact your NTI salesperson or visit our web site at http://www.networktechinc.com for details.
HDMI-A-Male
HDMI-xx-MM
(3,6,9,14,20, 30 50,75,100, and 150 foot cables available)
HDMI-A-Male

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
5
Figure 3- Example of configuration with HDMI extenders on input and output
Hub Ports
If desired, connect additional USB devices to
each of the three "Hub Ports". These ports
will be powered and operational anytime the VOPEX
and CPU are powered ON. See Fig. 3.
Figure 4- Connect other devices to Hub Ports

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
6
Power-Up
Connect the AC adapter to the VOPEX and power ON the VOPEX. If not already ON, power ON the CPU and monitors.
Figure 5- Connect the AC adapter to the VOPEX

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
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OPERATION
Mode Selection
The VOPEX comes equipped with three (3) modes of operation- INSTANT AUTO, DELAYED AUTO, and USERx. To manually
toggle between modes, depress the MODE button once each time a mode change is desired. Select the mode according to the
chart below.
MODE DESCRIPTION INDICATOR LEDS
2-Port INDICATOR LEDS 4-Port
INSTANTANEOUS All users have control of the
CPU simultaneously.
DELAY The first user with an active
device gets control of CPU. The
second user is locked out until
after 5 seconds of inactivity from
the first user.
USER 1 "USER 1" has sole access.
Other users are locked out.
USER 2 "USER 2" has sole access.
Other users are locked out.
USER 3
"USER 3" has sole access.
Other users are locked out.
------
USER 4 "USER 4" has sole access.
Other users are locked out.
------
Note: In Instantaneous Mode all users have control of the CPU simultaneously, but it is recommended that only one user
take control at a time. Movements from multiple mice at the same time will cause unpredictable movements on the
monitor.
Keyboard Command Mode
In order to control the other features of the VOPEX with the keyboard, Command Mode must be enabled. To enter
Command Mode from the keyboard:
Press
When the Command Mode is enabled, all 3 status lights on the keyboard will illuminate and both LED’s on the VOPEX will blink
continuously to indicate Command Mode is enabled. See the table below for functions that are available while in Command
Mode.
NOTE: The user must exit Command Mode in order for the CPU to switch to the selected mode. To exit Command Mode,
press ESC on the keyboard. The mouse will not operate while in Command Mode.
NOTE: While in Command Mode, when a proper programming command is entered and is recognized by the switch, the
hiLED’s on the keyboard will flash once to indicate acceptance. The user must exit Command Mode (by pressing ESC)
to see a change take effect in the switch operation.
NOTE: The VOPEX will automatically exit Command Mode after 5 seconds of inactivity by the user if the user does not
manually exit Command Mode.
`
+
Ctrl ~(ACCENT
KEY)
`
U1 U2 U3 U4
U1 U2 U3 U4
U1 U2
U1 U2
U1 U2
U1 U2
U1 U2 U3 U4
U1 U2 U3 U4
U1 U2 U3 U4
U1 U2 U3 U4

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
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The following functions exist while in Command Mode:
Key Combination Description of Function
<X>-<key>-<Y> Select a new key sequence to use to enter Command Mode – Replace <key> with the desired key
to follow <Ctrl> with.
<L> - <x> - <x> Select the country code of the keyboard being used with a USB SUN CPU (see Country Codes
chart below)
<V> - <Enter> This will print the version of the code in the VOPEX to a text editor window (i.e. Windows Notepad)
for use when troubleshooting the VOPEX. Note: The text editor should be open prior to entering
Command Mode.
<M> Configure the CPU port to connect to a MAC CPU (see "Mice and Trackballs with MACs" below.)
<W> Configure the CPU port to connect to a Windows or SUN CPU
<D> - <x> Select the operating mode, x=1 for Instantaneous Mode, x=2 for Delay Mode, x=3 User 1Mode, x=4
for User 2 mode. x= 5 for User 3 Mode, x=6 for User 4 Mode. (Modes are described in the table on
page 6.)
<P> - <x> Select the default mode to have the VOPEX enter upon power-up.
<Esc> Exit Command Mode
Mice and Trackballs with MACs
The VOPEX can be configured to enable full functionality between mice and trackballs having two or more buttons and a USB
MAC CPU. By default, the CPU port on the VOPEX is configured for use with a WINDOWS or SUN CPU and has no special
translation for using multi-function mice and trackballs when a MAC CPU is connected. Using the commands in Command Mode
above, either enable or disable this feature as needed.
NOTE: Be sure to re-configure the port for connection to a WINDOWS or SUN CPU if a MAC CPU is removed and a
WINDOWS or SUN CPU is then connected.
International SUN Keyboards
The VOPEX can recognize international layouts for Sun keyboards. To use an international Sun keyboard, follow this procedure:
1. Disconnect the CPU from the VOPEX
2. Connect the international keyboard to be used to the VOPEX
3. Power down the VOPEX for at least 3 seconds
4. Power up the VOPEX
5. Reconnect the CPU to the VOPEX
It is also possible to configure the VOPEX to emulate a specific international Sun keyboard regardless of what actual keyboard is
connected. This is recommended when the CPU needs the layout code (i.e. a SUN CPU) and the keyboard doesn't have an
explicit layout code (i.e. some Windows keyboards). To do this, manually set the VOPEX to indicate the international keyboard
identification number to the CPU using the following procedure:
1. Connect the keyboard to be used to the VOPEX
2. Power down the VOPEX for at least 3 seconds
3. Power up the VOPEX
4. Enter Command Mode (<Ctrl> - <`>)
5. Type Lxx, where xx is the number from the list below that corresponds to the desired country code
6. Exit Command Mode
7. Power down the VOPEX for at least 3 seconds
8. Power up the VOPEX
9. Reboot the CPU connected to the VOPEX
Country Codes
00 Not Supported 09 German 18 Netherlands/Dutch 27 Swiss/French
01 Arabic 10 Greek 19 Norwegian 28 Swiss/German
02 Belgian 11 Hebrew 20 Persian (Farsi) 29 Switzerland
03 Canadian-Bilingual 12 Hungary 21 Poland 30 Taiwan
04 Canadian-French 13 International (ISO) 22 Portuguese 31 Turkish
05 Czech Republic 14 Italian 23 Russia 32 UK
06 Danish 15 Japan (Katakana) 24 Slovakia 33 US
07 Finnish 16 Korean 25 Spanish 34 Yugoslavia
08 French 17 Latin American 26 Swedish 35-99 Reserved

NTI VOPEX-USBH-2/4 DVI/HDMI USB KVM SPLITTER
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Hub Ports
The three connections labeled "Hub Ports" can be used to connect any USB device, such as a printer, scanner, camera, etc. for
continuous operation at USB 1.1 compliant speeds. These ports are not controlled by the VOPEX.
SPECIFICATIONS
Size: Each unit is 8.5”W x 6”D x 2.6”H
Power: VOPEX-USBH-2- Powered by 120 or 240VAC @ 50 or 60Hz-5VDC/3.0A AC Adapter
VOPEX-USBH-4- Powered by 120 or 240VAC @ 50 or 60Hz-5VDC/6.0A AC Adapter
Connections: HDMI Type A- supports HDTV resolutions to 1080i and computer resolutions to 1920x1200. VGA & SGA
compatible
USB Type A female device connectors
USB Type B female CPU connector
TROUBLESHOOTING
PROBLEM SOLUTION
Keyboard error Check cable connections on CPU and VOPEX
Mouse not working Check cable connections on CPU and VOPEX
WARRANTY INFORMATION
The warranty period on this product (parts and labor) is two (2) years from the date of purchase. Please contact Network
Technologies Inc at [phone] (800-RGB-TECH) or [phone] or visit our website at http://www.networktechinc.com
for information regarding repairs and/or returns. A return authorization number is required for all repairs/returns.
Man123 Rev 12/17/19