SwiftSync 4K HDMI® KVM & USB, RS232 , IR, Audio over IP Encoder/Decoder set

The HKM02B-4K is a 4K30Hz, highly flexible HDMI® KVM Matrix system that supports a 1G Ethernet switch designed to scale with your project. Available in 1080P(HKM02B), 4K@30Hz (HKM02B-4K), or 4K@60Hz (HKM02B-4K6G), it allows you to customize the exact number of Encoders and Decoders based on your site requirements. Featuring dual-medium support for both CAT5e/6 and fiber-optic transmission, it seamlessly adapts to any infrastructure. With integrated Mouse Roaming, operators can control multiple PCs by simply moving the cursor across monitor borders. It is the perfect all-in-one solution for Response/Control Centers, large-scale security, and mission-critical routing. Note: Different resolution versions are not compatible and cannot be mixed within the same system.

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Features

**Mouse Roaming for Seamless Multi-PC Control**

Streamline your workflow with Mouse Roaming. Control multiple PCs using a single keyboard and mouse by simply moving the cursor across monitor borders. This hardware-based switching eliminates hotkeys, providing intuitive, real-time multitasking—perfect for enhancing efficiency in high-pressure Response Centers and mission-critical environments.

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Multiple control options to meet different project requirements.

Use the RS232 command list provided in the SC&T user manual to build a customized control interface.

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Built-in circuit protection components to prevent the devices from surge spikes.

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Ethernet Switch Requirement

HKM02B series requires a managed switch that supports IGMP and Jumbo Frames.

Resolution	Bandwidth (Mbps)
3840x2160(4K)	146~268
1920x1080 (1080p)	80~210
1280x720(720P)	112~177
1600x1200 (UXGA)	57~105
1280x1024 (SXGA)	79~150
1024x768(XGA)	72~120
800x600 (SVGA)	49~82
640x480 (VGA)	29~56

Optional 1U Rack-Mount Kit

For control rooms and AV racks, the 1U rack panel helps keep multiple SC&T devices aligned and easier to maintain.

Designed for selected SC&T device sizes for cleaner rack organization
Easy installation with included screw set and illustrated manual
Standard 19" rack format, 1U height

View Rack Kit

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5-Minute Setup Tutorial for SC&T AV over IP Systems

SC&T AVoIP tutorial videos are divided into two parts: The first part is the basic setup video, and the second part will be an advanced video wall tutorial, in which we will cover advanced settings and software operations.

In this video, you will learn how to:

Set up Jumbo Frame and IGMP Snooping of the switch
Set the Tx channel via one of the following methods:
1. Use the device buttons/rotary switch
2. Enter the RS232 command using PuTTY/RS232 software
3. Use the remote control with the screen panel/RS232 software

By following up the steps, you can easily set up the video matrix and control it using different methods like a remote control or software.

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Benefits

Multiple control options for different project requirements
Budget-friendly 1G network architecture
Supports both CAT cable and fiber for flexible distance planning
Supports a wide range of USB 2.0 devices, such as USB flash drives and webcams

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AV-over-IP Series Comparison Table

Case Studies

We offer a range of AV-over-IP case studies, including system topology diagrams and real-world application examples from system integrators.

Resolution up to 4K30Hz.
Signal extension up to 150m over CAT5e (or greater), 20km over fiber optic cable.
Works with 1G Ethernet switches for HDMI® extension, distribution, switching, and matrix.
Built-in loop out, an extra local HDMI® display at the Encoder side.
Built-in 4 USB ports for remote control.
Supports up to 8 x 16 video wall.
Supports video scaler, 4K30Hz to 1080p/ 1080p to 4K30Hz.
Supports HDMI® audio embedding and extraction function.
Supports USB, full-duplex RS232, bi-directional IR, analog audio transmission.
Supports RS232 signal distribution.
Managed via Windows-based software, Android/iOS APP, Web GUI, IR remote, panel buttons, Telnet API, RS232 console.

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Extending

Matrix Switching

Switching

Distributing

TV Wall

User Manual

HKM02B-4K_User Manual_EN_V1.0_2010160

CAD

HKM02BT-4K_CAD_EN_V1.0_2010160

HKM02BR-4K_CAD_EN_V1.0_2010160

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Firmware/Software

Update Steps:

Download the software.
Download the firmware.
Connect the device to the computer.
Open the software and select the corresponding downloaded firmware.
Operate the firmware update.

Release Date

Ver.

Release Note

File Name

November 16, 2025

V1.1_2510161

Firmware Update

HKM02BT-4K_Firmware_V1.1_2510161.zip Open in New Tab

HKM02BR-4K_Firmware_V1.0_2010160.zip Open in New Tab

Release Date

October 5, 2020

Ver.

V1.0_2010160

Firmware Upgrade

File Name

HKM02BR-4K_Firmware_V1.0_2010160.zip Open in New Tab

Tutorial Video

HKM02B - How to Control the System Using Mobile APP

Show More

Can the switch be shared with the office/network LAN?
- No. Video traffic consumes significant network bandwidth. Since the HKM02B series delivers high image quality with low compression, we recommend running the HKM02B series on a dedicated network/subnet for best performance.
Does the system require a specific switch brand?
- No specific brand is required. However, the switch must support IGMP Snooping and Jumbo Frames. Common brands used by our system integrator partners include Zyxel, TP-Link, PLANET, and NETGEAR.
How can I find the factory default IP address?
- A label on the bottom of the unit lists the factory default IP address.
Will there be a black screen during switching?
- Yes. When switching, the HKM02B series will show a brief black screen.
How do I configure the system?
- You can configure the system without a PC using the front panel, IR remote, or the mobile app (app support is not available on the 4K and 1080p versions at this time). Please refer to SC&T’s configuration videos. You can also configure and integrate with a control system via RS-232 by using the command list to build a customized control interface.

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Model	HKM02BP-4K	HKM02B-4K	HKM02B	VDKM02B
Video Format	HDMI	HDMI	HDMI	VGA/DVI
Resolution	4K@30Hz	4K@30Hz	1080p@60Hz	1080p@60Hz
Audio Embed & Extract	V	V	V	V
IR	V	V	V	V
RS232	V	V	V	V
PoE	V
Fiber Module	V	V

Discontinued

Suggested Replacement Model

HKM02B-4K