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®
1:4 VGA Hub
EXT-VGA-145
USER’S MANUAL
www.gefen.com
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ASKING FOR ASSISTANCE
Technical Support:
Telephone (818) 772-9100
(800) 545-6900
Fax (818) 772-9120
Technical Support Hours:
8:00 AM to 5:00 PM Monday through Friday PST
Write To:
Gefen, LLC
C/O Customer Service
20600 Nordhoff St.
Chatsworth, CA 91311
www.gefen.com
support@gefen.com
Gefen, LLC reserves the right to make changes in the hard ware, packaging, and
any accompanying doc u men ta tion without prior written notice.
1:4 VGA Hub is a trademark of Gefen LLC
© 2011 Gefen, LLC. All rights reserved.
All trademarks are the property of their respective owners.
Notice
Rev A2
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TABLE OF CONTENTS
1
Introduction / Operation Notes
2
Features
3
Panel Descriptions
4
Connecting and Operating the 1:4 VGA Hub
5
Specifi cations
6
Warranty
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INTRODUCTION
The 1:4 VGA Hub allows a computer with a VGA graphic card to connect to up to
four VGA compatible monitors or projectors at the same time. Because it allows
one computer to drive multiple monitors for simultaneous viewing, the 1:4 VGA Hub
can be used to set up additional monitors in the workspace or to assist presentation
environments by sending graphics to both monitors and projectors at the same time.
How It Works
Simply connect your computer’s VGA graphic port to the 1:4 VGA Hub’s input using
the supplied cable. Up to four analog monitors or projectors are connected to the
Hub’s four VGA outputs. VGA output 1 is the primary connection and is used for the
main display. VGA output 2, 3 and 4 will mirror the primary connection.
OPERATION NOTES
READ THESE NOTES BEFORE INSTALLING OR
OPERATING THE 1:4 VGA HUB
• Display information (EDID) is not sent back to the source. Standard VESA
resolutions should be output by most computers without the need of an EDID.
If using a non-VESA standard resolution or if EDID is needed, an EDID storage
and relay device is necessary. Gefen recommends the use of a DVI Detective
(part #EXT-DVI-EDIDN or EXT-DVI-EDIDP) with two VGA to DVI adapters.
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FEATURES
Features
• Connects computers with VGA graphics to four VGA compatible monitors
• Allows four VGA displays to be connected at the same time to the same video
source
• Maintains highest video resolution up to 1920 x 1200 and 1080p
• Installs in seconds
Includes:
(1) 1:4 VGA Hub
(1) 6’ VGA cable (M-F)
(1) 5VDC Power Supply
(1) Users Manual
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PANEL DESCRIPTIONS
Front Panel
VGA Out 1
5V Power
Input
5V Power
LED
VGA Out 2
Back Panel
VGA In
VGA Out 3
VGA Out 4
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CONNECTING AND OPERATING THE 1:4 VGA HUB
How to Connect the 1:4 VGA Hub to your devices
1. Connect the supplied VGA cable from the VGA device into the 1:4 VGA Hub
Input.
2. Connect the cables from your displays (monitor or projector) into the VGA Out
slots in the back of the 1:4 VGA Hub
3. Plug the 5v power supply into the 1:4 VGA Hub.
4. Plug the 5v wall-mount power supply into the wall outlet.
NOTE:
Display information (EDID) is not sent back to the source. Standard VESA
resolutions should be output by most computers without the need of an EDID. If using a non-VESA standard resolution or if EDID is needed, an EDID storage and relay device is necessary. Gefen recommends the use of a DVI Detective (part# EXTDVI-EDID, EXT-DVI-EDIDN, or EXT-DVI-EDIDP) with two VGA to DVI adapters.
Connection Diagram for the 1:4 VGA Hub:
HDMI CABLE
Computer
Splitter
VGA Monitor
VGA Monitor
VGA Monitor
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SPECIFICATIONS
Video Amplifi er Bandwidth ............................................................................ 350 MHz
Input Video Signal ................................................................................... 1.2 volts p-p
Maximum Resolutions supported ......................................... 1080p, 1920 x 1200, 2K
Horizontal Frequency Range: ...................................................................15 - 70 KHz
Vertical Frequency Range: ........................................................................30 - 170 Hz
Input VGA Connectors............................................................................... HD15 Male
Output VGA Connector........................................................................... HD15 female
Power Consumption ............................................................................ 5 Watts (max.)
Power Supply ................................................................................................... 5V DC
Dimensions ................................................................................ 1”H x 5.6”W x 2.6”D
Shipping Weight ................................................................................................. 2 Lbs
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WARRANTY
Gefen warrants the equipment it manufactures to be free from defects in material
and workmanship.
If equipment fails because of such defects and Gefen is notifi ed within two (2)
years from the date of shipment, Gefen will, at its option, repair or replace the
equipment, provided that the equipment has not been subjected to mechanical,
electrical, or other abuse or modifi cations. Equipment that fails under conditions
other than those covered will be repaired at the current price of parts and labor in
effect at the time of repair. Such repairs are warranted for ninety (90) days from
the day of reshipment to the Buyer.
This warranty is in lieu of all other warranties expressed or implied, including
without limitation, any implied warranty or merchantability or fi tness for any
particular purpose, all of which are expressly disclaimed.
1. Proof of sale may be required in order to claim warranty.
2. Customers outside the US are responsible for shipping charges to and from
Gefen.
3. Copper cables are limited to a 30 day warranty and cables must be in their
original condition.
The information in this manual has been carefully checked and is believed to
be accurate. However, Gefen assumes no responsibility for any inaccuracies
that may be contained in this manual. In no event will Gefen be liable for
direct, indirect, special, incidental, or consequential damages resulting from
any defect or omission in this manual, even if advised of the possibility of such
damages. The technical information contained herein regarding the features and
specifi cations is subject to change without notice.
For the latest warranty coverage information, refer to the Warranty and Return
Policy under the Support section of the Gefen Web site at www.gefen.com.
PRODUCT REGISTRATION
Please register your product online by visiting the Register Product page
under the Support section of the Gefen Web site.
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Rev A2
20600 Nordhoff St., Chatsworth CA 91311
1-800-545-6900 818-772-9100 fax: 818-772-9120
www.gefen.com support@gefen.com
Pb
This product uses UL listed power supplies.
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