Smart-AVI SM-DPN-2S 2-Port Single-Head DisplayPort KVM Switch-logo

Smart-AVI SM-DPN-2S 2-Port Single-Head DisplayPort KVM Switch

Smart-AVI SM-DPN-2S 2-Port Single-Head DisplayPort KVM Switch-prod

Technical Specifications

Format DisplayPort1.2
Maximum Pixel Clock 165 MHz
Input Interface SM-DPN-2S (2) DisplayPort
SM-DPN-2D (4) DisplayPort
Output Interface SM-DPN-2S (1) DisplayPort
SM-DPN-2D (2) DisplayPort
Resolution 3840 x 2160 @ 30 Hz
Color Mode 24-bit
DDC 5 volts p-p (TTL)
Input Equalization Automatic
Input Cable Length Up to 20 ft
Output Cable Length Up to 20 ft
Data Rate 1.65 Gbps per color
Console Monitors Supports both digital and analog monitors
Input Interface (2) 3.5 mm Stereo Audio
Output Interface (1) 3.5 mm Stereo Audio
Impedance 600 Ohm
Frequency Response 20 Hz to 20 kHz
Nominal Level 0-1.0 V
Common Mode Rejection at 60 dB
Signal Type USB 2.0, 1.1, and 1.0 w/ internal hub
Input Interface (2) USB Type B (female)
Output Interface (2) USB Type A (female) for K/M emulation; (2) for USB 2.0 Transparent
Front Panel Push Buttons with LED Indicators
RS-232 DB9 Female – 115200 N,8,1, No flow control
Hot Keys Via Keyboard
Power Adapter External 100-240 VAC/12VDC2A @ 24W
Dimensions 8.8” W x 2.63” H x 6.69” D
Weight 3.85 lbs
Approvals UL, CE, ROHS Compliant
Operating Temperature +32 to +104°F (0 to +40°C)
Storage Temperature -4 to 140°F (-20 to +60°C)
Humidity Up to 80% (No Condensation)
Emulation Keyboard and Mouse

What’s in the box?

SM-DPN Unit 1 2-Port DisplayPort KVM Switch with Audio and USB 2.0 Support
PS5VDC2A 1 Power Adapter
  1 User Manual

FRONT AND BACKSmart-AVI SM-DPN-2S 2-Port Single-Head DisplayPort KVM Switch-fig1


  1. Ensure that power is turned off or disconnected from the unit and the computers.
  2. Use a DisplayPort cable to connect the DisplayPort 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 respective USB ports of the unit.
  4. Optionally 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 DP OUT console port of the unit using a DisplayPort cable.
  6. Connect a USB keyboard and mouse in the two USB console ports.
  7. Optionally connect stereo speakers to the AUDIO OUT port of the unit.
  8. Finally, power on the KVM by connecting a 12VDC power supply to the power connector, and then turn on all the computers.

Note: You can connect up to 2 computers to the 2 port KVM.Smart-AVI SM-DPN-2S 2-Port Single-Head DisplayPort KVM Switch-fig2

The KVM is designed to learn the connected monitor’s EDID upon power-up. In the event of connecting a new monitor to the KVM, power recycling is required. The KVM will indicate to the user the EDID learns the process by flashing the front panel’s LEDs. Port one green and push-button blue LEDs will both begin to flash for about 10 seconds. When the LEDs stop flashing, the EDID learning process is done. If the KVM has more than one video board (such as dual-head and quad-head models), then the unit will continue to learn the EDIDs of the connected monitors and indicate the progress of the process by flashing the next port selection green and push-button blue LEDs respectively. The monitor must be connected to the video output connector located in the console space at the back of the KVM during the EDID learn the process. If the read EDID from the connected monitor is identical to the current stored EDID in the KVM then the EDID learn function will be skipped.

System operation

There are three ways to control the SM-DPN: Keyboard Hotkeys, RS-232 Serial Commands, and Front Panel Buttons. All modes of control will allow the user the set their desired configurations.
front panel control
To switch to an input port, simply push the button on the front panel of the KVM. If an input port is selected, the LED of that port will turn on. Hold down the button of the Front Panel for 3 seconds to force learn EDID.
hotkey and rs232 serial control
The SM-DPN may also be controlled via RS-232 commands. To use these commands, you must use HyperTerminal or an alternate terminal application. The settings for the connection are as follows: Baudrate 115200; Data Bits 8; Parity None; Stop Bits 1; Flow Control None. Once you have connected to the SM-DPN via Serial, you will see the SM-DPN information when the device starts up.
The following commands can be used for RS-232 with available keyboard hotkeys:

COMMAND DESCRIPTION        HOTKEY                                          RS-232 COMMAND
Switch all USB devices and Main video [CTRL][CTRL] m [port #] [ENTER] //m [port #] [ENTER]
Switch Audio Only [CTRL][CTRL] a [port #] [ENTER] //a [port #] [ENTER]
Switch KM Only [CTRL][CTRL] c [port #] [ENTER] //c [port #] [ENTER]
Switch USB Only [CTRL][CTRL] u [port #] [ENTER] //u [port #] [ENTER]
Reset Software [CTRL][CTRL] r [ENTER] //r [ENTER]
Status Query N/A //?? [ENTER]

Custom hotkey triggers

Users are able to customize the keys that trigger Hotkeys. The default trigger for hotkey function on the keyboard is Ctrl + Ctrl. The trigger function can be used to change to the following keys:
Ctrl (Left / Right), Alt, Shift (Left / Right), Caps Lock, Scroll Lock, F1-F12 TO VIEW HOTKEY TRIGGER SETTING Use the RS-232 command: / + / + ? + ? + Enter to view the current HotKey Trigger To reset the Hotkey Trigger use the “Factory Defaults” command. TO CHANGE THE HOTKEY TRIGGER SETTING HotKey + HotKey + x + [desired hotkey] Example: If users current Hotkey trigger is Shift and want to change to Scroll Lock, user would type Shift + Shift + x + Scroll Lock

Led’s behavior

User Console Interface – Display LED:

1 Off The monitor is not connected
2 On Monitor is connected
3 Flashing EDID problem – Learn EDID to fix the problem

EDID Learn – Front Panel LEDs:

1 Off Non-selected port
2 On Selected port
3 Flashing EDID learn in the process

All LEDs are turned on for 1 second. Then:

  • Port 1 LEDs will flash until the end of the process.
  • Port 2 LED’s will flash until the end of the process if a second video board exists (Dual-head KVM)


If all Front Panel LEDs are on and not flashing, the POWER UP SELF TEST has failed and all functions are disabled. Check if any of the front panel port selection buttons are jammed. In this case, release the jammed button and recycle the power. If the power-up self-test is still failing, please contact SmartAVI technical support at [email protected]


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 functioning properly.
  • Restart the computers.

The keyboard is not working

  • Check if the keyboard is properly connected to the unit.
  • Check if the USB cables connecting the unit and the computers are properly connected.
  • Try connecting the USB on the computer to a different port.
  • Make sure that the keyboard works when directly connected to the computer.
  • Replace the keyboard.

The mouse is not working

  • Check if the mouse is properly connected to the unit.
  • Try connecting the USB on the computer to a different 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 computer audio are functioning properly.
  • Check the audio settings 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]

Limited warranty statement

Extent of the limited warranty
SmartAVI, Inc. warrants to the end-user customers that the SmartAVI product specified above will be free from defects in materials and workmanship for the duration of 1 year, which duration begins on the date of purchase by the customer. The customer is responsible for maintaining proof of date of purchase.
SmartAVI limited warranty covers only those defects which arise as a result of the normal use of the product, and do not apply to any:

  • Improper or inadequate maintenance or modifications
  • Operations outside product specifications
  • Mechanical abuse and exposure to severe conditions

If SmartAVI receives, during the applicable warranty period, a notice of defect, SmartAVI will at its discretion replace or repair defective product. If SmartAVI is unable to replace or repair a defective product covered by the SmartAVI warranty within a reasonable period of time, SmartAVI shall refund the cost of the product. SmartAVI shall have no obligation to repair, replace or refund unit until the customer returns the defective product to SmartAVI. Any replacement product could be new or like new, provided that it has functionality at least equal to that of the product being replaced. SmartAVI’s limited warranty is valid in any country where the covered product is distributed by SmartAVI.

Limitations of warranty
To the extant allowed by local law, neither SmartAVI nor its third party suppliers make any other warranty or condition of any kind whether expressed or implied with respect to the SmartAVI product, and specifically disclaim implied warranties or conditions of merchantability, satisfactory quality, and fitness for a particular purpose.

Limitations of liability
To the extent allowed by local law the remedies provided in this warranty statement are the customer’s sole and exclusive remedies. To the extent allowed by local law, except for the obligations specifically set forth in this warranty statement, in no event will SmartAVI or its third party suppliers be liable for direct, indirect, special, incidental, or consequential damages whether based on contract, tort or any other legal theory and whether advised of the possibility of such damages.

Local law
To the extent that this warranty statement is inconsistent with local law, this warranty statement shall be considered modified to be consistent with such law.

The information contained in this document is subject to change without notice. SmartAVI makes no warranty of any kind with regard to this material, including but not limited to, implied warranties of merchantability and fitness for a particular purpose. SmartAVI will not be liable for errors contained herein or for incidental or consequential damages in connection 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 written consent from SmartAVI, Inc.

Tel: (800) AVI-2131 • (702) 800-0005 2455 W Cheyenne Ave, Suite 112 North Las Vegas, NV 89032

Documents / Resources

Smart-AVI SM-DPN-2S 2-Port Single-Head DisplayPort KVM Switch [pdf] User Manual
SM-DPN-2S 2-Port Single-Head DisplayPort KVM Switch, SM-DPN-2D 2-Port Dual-Head DisplayPort KVM Switch, SM-DPN-2S, 2-Port Single-Head DisplayPort KVM Switch, SM-DPN-2D, 2-Port Dual-Head DisplayPort KVM Switch, SM-DPN Series Advanced 2-Port Displayport KVM Switch


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