4-Port Dual Monitor 4K DisplayPort KVM Switch with USB 2.0 & Audio.


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Video Type: DisplayPort
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The SM-DPN-4D (formerly the DPN-4P-Duo) is a dedicated multi-platform KVM Switch capable of managing up to 4 different computers through two monitors, USB keyboard & mouse, a set of speakers and USB devices like printers, memory devices, scanners, etc. The video connectors on the unit are DisplayPort, which allows support for HDMI and VGA using inexpensive passive adapters or cables. The SM-DPN-4D supports resolutions of up to 3840 x 2160 @ 30 Hz with zero pixel loss from TMDS signal correction

The SM-DPN-4D provides a simplified management approach for four DisplayPort equipped computers with USB 2.0 outputs for a keyboard, mouse and other USB peripheral devices such as a printers and flash drives. This dynamic KVM console can be controlled keyboard Hot Keys or RS-232 commands, as well as directly through the console's easy-to-read front panel. EDID Pass-Through technology enables smooth and efficient switching, making the device easy to implement in virtually any scenario. With 4K resolutions, independent switching audio, and support for additional USB 2.0 devices to share across connected CPUs, the SM-DPN-4D is a perfect solution for the medical or industrial field where it may not be practical or safe to have one or more CPUs located in the production environment.

SmartAVI SM-DPN-4D-S (formerly the DPN-4DUO) Application Diagram

SmartAVI SM-DPN-4D-S (formerly the DPN-4DUO) Rear
SM-DPN-4D-S (formerly the DPN-4DUO) Rear

SM-DPN-4D Features & Benefits

  • Switch KVM control on four connected dual-head computers from one workstation with two DisplayPort monitors
  • DisplayPort video connections
  • Supports resolutions up to 3840x2160 (@30Hz)
  • Supports additional USB 2.0 devices like printers, scanners, web cameras and more
  • Supports all major Operating Systems like Windows, Mac, Linux, Sun, Unix, DOS, etc.
  • Supports control via RS-232
  • Hot key commands for quick channel selection
  • Front panel keys for manual port selection
  • Independent (asynchronous) switching of KVM and peripheral USB/audio ports. Users can listen to audio from one computer while working on a different computer, or scan a document and save it on another computer
  • Complete keyboard emulation for error free booting
  • Flash upgradeable firmware

SM-DPN-4D-S (SM-DPN-4D System) Package Includes

SmartAVI DPN-4Duo Package Contents

  • (1) SM-DPN-4D Dual Head 4-Port DisplayPort KVM Switch with Audio and USB 2.0 Support.
  • (1) PS12VDC2A 12V DC, 2A power adapter with center-pin positive polarity.
  • (1) Quick Installation and User Guide

SmartAVI SM-DPN-4D-S Specifications

Format DisplayPort
Input Interface (8) DisplayPort (female)
Output Interface (2) DisplayPort (female)
Resolution Up to 4K (3840x2160 @30Hz)
DDC 5 volts p-p (TTL)
Input Equalization Automatic
Signal Type USB 2.0, 1.1, and 1.0 w/ internal Hub
Input Interface (4) USB Type B (female)
Output Interface (2) USB 1.1 Type A (female) for keyboard and mouse
(2) USB 2.0 Type A Transparent
Front Panel Push Buttons with LED indicators
RS-232 Via Serial @ 115200 bps
Hot Keys Via Keyboard, Select/Switch between AV sources
Emulation Keyboard, Mouse and Video
Power 12V DC, 3A (minimum) power adapter with center-pin positive polarity.
Dimensions 2.7" H x 6.698" D x 12.57" W
Weight 4.2 lbs
Approvals UL, CE, ROHS Compliant
Operating Temp. 32 to 104 F (0 to 40 C)
Storage Temp. -4 to 140 F (-20 to 60 C)
Humidity Up to 80% (No Condensation)

The SM-DPN-4D-S is the full system that includes the SM-DPN-4D and power supply. The SM-DPN-4D-S is also known as the SM-DPN-4DS, or simply SM-DPN-4D and is formerly known as the DPN-4Duo-S, DPN-4DuoS, and DPN-4PDuo.

UPC / EAN Barcode icon
UPC 657477086275
EAN 0657477086275
Question: On Smart-AVI's website, this description is shown as - Supports resolutions up to 3840x2160 (@30Hz), not @60Hz as you show it.
Answer: Thank you for your inquiry. We are updating our webpage to reflect the newly available refresh rate information.

Question: Does the display port 1.2 compliance include multistreaming to chain an additional monitor off the first display port connection?
Answer: Thank you for your inquiry,

Multistreaming (MST) is is not supported on the DPN-4PDUO, but may work on certain monitors. The DisplayPort signal is processed along the way so most of the time the datalanes do not have a transparent 1-1 connection. Unfortunately we are unable to recommend a solution with MST as this is not a feature that our vendors support; We would generally recommend avoiding cascading DisplayPort monitors when connected to a KVM - you can achieve multi screen setups over individual video connections.

Question: What is the guarantee period ?
Answer: Thank you for your inquiry. All new Smart-AVI products come with a standard 1 year warranty for defects in materials and workmanship.

Question: If this device is for four PC connections, why are there 8 different input ports?
Answer: Thank you for your inquiry,

SmartAVI DPN-4Duo is designed for switching 4 Dual-monitor PCs - this KVM unit takes in two video inputs as well as 1 USB input from each PC source. For an illustration of this, please see image below:

SmartAVI DPN-4Duo - One source computer illustration

For a 4-port single-monitor version of this switch, please see the SmartAVI DPN-4P.

Question: How would I connect source computers since the cable recommended for this device (CCDPMMKVM-06-S) only has a single (not dual) Dport connection per cable? Please advise?
Answer: Thank you for your inquiry,

This DPN-4Duo KVM would require (1) CCDPMMKVM-06-S + (1) DisplayPort cable (i.e. C2G 54401) per source computer - so a total of 4 of each cable for 4 dual monitor sources.

Please let us know if there is anything else we can help you with!