SMART-AVI SM-MST-2S User manual

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 1
1-800-284-2131
www.smartavi.com
USER MANUAL
MST DP KVM with MULTIPLE 4K HDMI Out
SM-MST-2S 2 Port KVM MST with Dual 4K HDMI Out
SM-MST-2D 2 Port KVM MST with Quad 4K HDMI Out
SM-MST-4S 4 Port KVM MST with Dual 4K HDMI Out
SM-MST-4D 4 Port KVM MST with Quad 4K HDMI Out
SM-MST series

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 2
TECHNICAL SPECIFICATIONS_____________________________________________________________ 3-4
WHAT’S IN THE BOX?_____________________________________________________________________ 4
FRONT AND REAR________________________________________________________________________ 4
INSTALLATION____________________________________________________________________________ 5-7
LED’s BEHAVIOR__________________________________________________________________________ 8
SYSTEM OPERATION______________________________________________________________________9
TROUBLESHOOTING______________________________________________________________________ 9
TECHNICAL SUPPORT_____________________________________________________________________9
LIMITED WARRANTY STATEMENT________________________________________________________ 10
Table of content

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 3
VIDEO
Format DisplayPort1.2a
Input Interface (TX)
SM-MST-2S (2) DisplayPort1.2a
SM-MST-2D / SM-MST-4S (4) DisplayPort1.2a
SM-MST-4D (8) DisplayPort1.2a
Output Interface (RX) SM-MST-2S / SM-MST-4S (2) HDMI
SM-MST-2D / SM-MST-4D (4) HDMI
Input Resoluon Up to 4K (3840 x 2160 @ 60 Hz)
Output Resoluon Up to 4K (3840 x 2160 @ 30 Hz)
DDC 5 volts p-p (TTL)
Input equalizaon Automac
Input cable length Up to 20 
Output cable length Up to 20 
Technical Specifications
USB
Input interface (TX) (2) USB type B
Output interface (RX) (2) USB 1.1 Type A for KM Devices
Emulaon USB 1.1 and USB 2.0 Compable
AUDIO
Audio Input (2) 3.5mm stereo audio
Audio Output (1) 3.5mm stereo audio
CONTROL
Front Panel Front panel SELECT buons
CONTROL
Power External 100-240 VAC/ 12VDC2A @ 24 W
Dimensions
SM-MST-2S / SM-MST-2D 8.8” W x 2.63” H x 6.69” D
SM-MST-4S 12.57” W x 1.76” H x 6.69” D
SM-MST-4D 12.57” W x 2.7” H x 6.69” D
SM-MST-2S / SM-MST-2D 3.85 lbs
Weight SM-MST-4S 4.2 lbs
SM-MST-4D 4.5 lbs
Approvals UL, CE, ROHS Compliant
Operang Temperature +32 to +104°F (0 to +40°C)
Storage Temperature -4 to 140°F (-20 to +60°C)
Humidity Up to 80% (No Condensaon)

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 4
SM-MST Unit 2/4 Port KVM MST with Dual or Quad 4K HDMI Out
PS12V2A 12V DC, 2A (minimum) power adapter with center-pin posive polarity.
User Manual
What’s in the box?
SM-MST-2S rear
SM-MST-2S FRONT
SM-MST-2D rear
SM-MST-2D FRONT

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 5
SM-MST-4S rear
SM-MST-4S FRONT
SM-MST-4D rear
SM-MST-4D FRONT

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 6
1. Ensure that power is turned o or disconnected from the unit and the computers.
2. Use a DisplayPort cable to connect the DP output port from each computer to the
corresponding DP IN ports of the unit.
3. Use a USB cable (Type-A to Type-B) to connect a USB port on each computer to the
respecve USB ports of the unit.
4. Oponally connect a stereo audio cable (3.5mm to 3.5mm) to connect the audio output
of the computers to the AUDIO IN ports of the unit.
5. Connect a monitor to the HDMI OUT console port of the unit using a HDMI cable.
6. Connect a USB keyboard and mouse in the two USB console ports.
7. Oponally connect stereo speakers to the AUDIO OUT port of the unit.
8. Finally, power on the KVM by connecng a 12VDC power supply to the power
connector, and then turn on all the computers.
installation
Application diagram SM-MST-2S
The SM-MST-2S converts a single DisplayPort 1.2 input signal to two separate HDMI Output
connecons through advanced MulStream Transport technology. This allows a user to extend their
display and achieve resoluons of up to 4K (3840 x 2160 @ 30 Hz) on each connected monitor
without from single DP port.
Part No. Descripon
SM-MST-2S 2 Port KVM MST with Dual 4K HDMI Out. Includes: [SM-MST-2S-S; PS12V2A]

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 7
Application diagram SM-MST-2D
The SM-MST-2D converts a dual DisplayPort 1.2 input signal to four separate HDMI Output
connecons through advanced MulStream Transport technology. This allows a user to extend their
display and achieve resoluons of up to 4K (3840 x 2160 @ 30 Hz) on each connected monitor
without from single DP port.
Part No. Descripon
SM-MST-2D 2 Port KVM MST with Quad 4K HDMI Out. Includes: [SM-MST-2D-S; PS12V2A]

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 8
Application diagram SM-MST-4S
The SM-MST-4S converts a single DisplayPort 1.2 input signal to two separate HDMI Output
connecons through advanced MulStream Transport technology. This allows a user to extend their
display and achieve resoluons of up to 4K (3840 x 2160 @ 30 Hz) on each connected monitor
without from single DP port.
Part No. Descripon
SM-MST-4S 4 Port KVM MST with Dual 4K HDMI Out. Includes: [SM-MST-4S-S; PS12V2A]

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 9
Application diagram SM-MST-4D
The SM-MST-4D converts a dual DisplayPort 1.2 input signal to four separate HDMI Output
connecons through advanced MulStream Transport technology. This allows a user to extend their
display and achieve resoluons of up to 4K (3840 x 2160 @ 30 Hz) on each connected monitor
without from single DP port.
Part No. Descripon
SM-MST-4D 4 Port KVM MST with Quad 4K HDMI Out. Includes: [SM-MST-4D-S; PS12V2A]

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 10
Troubleshooting
No Power
 Make sure that the power adapter is securely connected to the power connector of the
unit.
 Check the output voltage of the power supply and make sure that the voltage value is
around 12VDC.
 Replace the power supply.
No Video
 Check if all the video cables are connected properly.
 Connect the computer directly to the monitor to verify that your monitor and computer
are funconing properly.
 Restart the computers
Keyboard is not working
 Check if the keyboard is properly connected to the unit.
 Check if the USB cables connecng the unit and the computers are properly connected.
 Try connecng the USB on the computer to a dierent port.
 Make sure that the keyboard works when directly connected to the computer.
 Replace the keyboard.
Mouse is not working
 Check if the mouse is properly connected to the unit.
 Try connecng the USB on the computer to a dierent port.
 Make sure that the mouse works when directly connected to the computer.
 Replace the mouse.
No Audio
 Check if all the audio cables are connected properly.
 Connect the speakers directly to the computer to verify that the speakers and the comput-
er audio are funconing properly.
 Check the audio sengs of the computer and verify that the audio output is through the
speakers.
Technical support
For product inquiries, warranty questions, or technical questions, please contact [email protected].

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 11
Limited warranty statement
A. Extent of limited warranty
SmartAVI, Inc. warrants to the end-user customers that the SmartAVI product specied above will be
free from defects in materials and workmanship for the duraon of 1 year, which duraon begins on
the date of purchase by the customer. Customer is responsible for maintaining proof of date of
purchase.
SmartAVI limited warranty covers only those defects which arise as a result of normal use of the
product, and do not apply to any:
a. Improper or inadequate maintenance or modicaons
b. Operaons outside product specicaons
c. Mechanical abuse and exposure to severe condions
If SmartAVI receives, during applicable warranty period, a noce of defect, SmartAVI will at its
discreon replace or repair defecve product. If SmartAVI is unable to replace or repair defecve
product covered by the SmartAVI warranty within reasonable period of me, SmartAVI shall refund
the cost of the product.
SmartAVI shall have no obligaon to repair, replace or refund unit unl customer returns defecve
product to SmartAVI.
Any replacement product could be new or like new, provided that it has funconality at least equal to
that of the product being replaced.
SmartAVI limited warranty is valid in any country where the covered product is distributed by
SmartAVI.
B. Limitaons of warranty
To the extant allowed by local law, neither SmartAVI nor its third party suppliers make any other
warranty or condion of any kind whether expressed or implied with respect to the SmartAVI
product, and specically disclaim implied warranes or condions of merchantability, sasfactory
quality, and tness for a parcular purpose.
C. Limitaons of liability
To the extent allowed by local law the remedies provided in this warranty statement are the
customers sole and exclusive remedies.
To the extant allowed by local law, except for the obligaons specically set forth in this warranty
statement, in no event will SmartAVI or its third party suppliers be liable for direct, indirect, special,
incidental, or consequenal damages whether based on contract, tort or any other legal theory and
whether advised of the possibility of such damages.
D. Local law
To the extent that this warranty statement is inconsistent with local law, this warranty
statement shall be considered modied to be consistent with such law.

2/4 Port KVM MST with Dual or Quad 4K HDMI Out 12
NOTICE
The informaon contained in this document is subject to change without noce. SmartAVI
makes no warranty of any kind with regard to this material, including but not limited to,
implied warranes of merchantability and tness for parcular purpose. SmartAVI will not be
liable for errors contained herein or for incidental or consequenal damages in connecon
with the furnishing, performance or use of this material. No part of this document may be
photocopied, reproduced, or translated into another language without prior wrien consent
from SmartAVI, Inc.
20180109
Tel: (800) AVI-2131 • [phone]
2455 W Cheyenne Ave, Suite 112
North Las Vegas, NV 89032
www.smartavi.com