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4-Port Dual HDMI KVM Switch 

with USB 2.0 and Audio Sharing 

ACCESS AND CONTROL  

UP TO 4 COMPUTERS  

FROM A SINGLE WORKSTATION

Quick Start Guide

VIDEO

Format

HDMI 1.4, 1.0

Input Interface 

(8) HDMI (female) 

Output Interface

(2) HDMI (female) 

Resolution

Up to 4K (3840x2160 @30Hz) 

DDC

5 volts p-p (TTL)

Input Equalization 

Automatic

Input Cable Length 

Up to 20 ft. 

Output Cable Length

Up to 20 ft. 

AUDIO

Input Interface 

(4) 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 

USB

Signal Type

USB 2.0, 1.1, and 1.0  

w/ internal hub

Input Interface

(4) USB Type B 

Output Interface 

(2) USB 1.1 Type A for K/M

(2) USB 2.0 Type A Transparent 

CONTROL

Front Panel 

Buttons, Select/Switch between 

sources and view the current  

selected channel

RS-232 

DB9 Female - 115200, N, 8, 1,  

No flow control 

Hot Keys 

Via Keyboard 

OTHER

Power

100-240 VAC/ 5VDC4A 

Dimensions

3” H x 5.75” D x 12.75” W 

Weight

3.95 lbs 

Approvals

UL, CE, ROHS Compliant

Operating Temp.

32-131°F (0-55 °C)

Storage Temp.

-4-185 °F (-20-85 °C)

Humidity

Up to 95%

Emulation

Keyboard and Mouse 

NOTICE

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 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 

Technologies, Inc.

800.AVI.2131, 702.800.0005

2455 W Cheyenne Ave, Suite 112 

North Las Vegas, NV 89032

SmartAVI.com

TECHNICAL SPECIFICATION

HDN-4DUO

WHAT’S IN THE BOX

PART NO.

Q-TY DESCRIPTION

HDN-4DUO-S

1

4-Port Dual-Head HDMI 

KVM Switch with USB 2.0 

and Audio Sharing 

PS5VD4A

1

PS5VD4A Power Supply

Quick Start Guide

1

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