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].