UHD44-EXB230R-K Overview and Use Cases

What Is the UHD44-EXB230R-K?

The OREI UHD44-EXB230R-K is a 4x4 4K HDMI HDBaseT matrix extender with audio extraction. It allows four HDMI source devices to be routed to four display zones using both local HDMI outputs and long-distance HDBaseT outputs over CAT cable.

The kit includes one matrix Transmitter, four Receivers, one remote, IR Blaster cables, IR Receiver cables, Phoenix connectors, mounting ears, RS-232 serial cable, AC power cable, and a user manual. HDMI sources connect to INPUT 1–4 on the matrix. Displays can connect locally through HDMI OUTPUT 1–4 or remotely through the included Receivers using the HDBaseT outputs over CAT cable.

The UHD44-EXB230R-K supports HDMI 2.0b and HDCP 2.2, with a video bandwidth of 18Gbps. It supports video resolutions up to 4K@60Hz, HDR10, HDR10+, Dolby Vision, HLG, 4K to 1080p downscaling, HDMI audio pass-through up to 7.1CH, audio extraction through coaxial and balanced analog outputs, bi-directional IR control, CEC control, advanced EDID management, RS-232, LAN control, WebGUI control, and Power over Cable.

The UHD44-EXB230R-K is useful for residential AV systems, commercial AV installations, conference rooms, restaurants, bars, classrooms, houses of worship, retail displays, control rooms, training rooms, showrooms, and any installation where multiple HDMI sources need to be routed to multiple local and remote displays.

IMPORTANT — UHD44-EXB230R-K Is a 4x4 HDBaseT Matrix Extender

The UHD44-EXB230R-K routes four HDMI inputs to four output zones.

Each output zone includes one local HDMI output and one mirrored HDBaseT output.

This means HDMI OUTPUT 1 and HDBT OUTPUT 1 follow the same selected input, HDMI OUTPUT 2 and HDBT OUTPUT 2 follow the same selected input, and so on.

IMPORTANT — Supports 4K@60Hz

The UHD44-EXB230R-K supports video resolutions up to 4K@60Hz.

To get 4K@60Hz, the HDMI source, display, HDMI cables, CAT cables, Receivers, and source output settings must all support the required signal.

IMPORTANT — HDBaseT Extension Is Supported

The UHD44-EXB230R-K extends HDMI signals through the HDBaseT outputs using CAT cable.

The matrix can be used for both local and remote display zones.

IMPORTANT — HDMI Outputs and HDBaseT Outputs Are Mirrored by Zone

The UHD44-EXB230R-K includes four HDMI outputs and four HDBaseT outputs.

The HDMI and HDBaseT output in the same zone follow the same selected input.

For example, if Output 1 is set to Input 3, both HDMI OUTPUT 1 and HDBT OUTPUT 1 will show Input 3.

IMPORTANT — 4K to 1080p Downscaling Is Supported

The UHD44-EXB230R-K supports 4K to 1080p downscaling on all output ports.

Use downscaling when:

• A display does not support 4K
• One zone uses a 1080p display
• The source is outputting 4K but the display only supports 1080p
• A mixed 4K and 1080p display setup is being used

IMPORTANT — Audio Extraction Is Supported

The UHD44-EXB230R-K supports audio extraction through coaxial and balanced analog audio outputs.

The audio extraction follows the video output of OUTPUT 1–4 ports.

Supported audio formats include:

The connected source, display, AVR, amplifier, speaker system, or audio processor must also support the selected audio format.

IMPORTANT — Power over Cable Is Supported

The UHD44-EXB230R-K supports Power over Cable.

The Receivers get power from the matrix Transmitter through the CAT cables.

If a Receiver does not power on, check the CAT cable, HDBT port, Receiver HDBT IN port, and matrix power connection.

IMPORTANT — Bi-Directional IR Control Is Supported

The UHD44-EXB230R-K supports bi-directional IR control.

This allows:

• Source devices to be controlled from the Receiver / display side
• Displays to be controlled from the matrix / local side

Use the correct IR cable direction based on what device needs to be controlled.

IMPORTANT — Advanced EDID Management Is Supported

The UHD44-EXB230R-K supports advanced EDID management.

EDID can be managed using:

• Front panel buttons
• RS-232 commands
• WebGUI

The matrix includes 21 pre-defined EDID settings, 2 user-defined EDID modes, and copy EDID modes from HDMI or HDBaseT outputs.

Use EDID settings when:

• There is no video
• A source outputs the wrong resolution
• Audio format is not working correctly
• Mixed 4K and 1080p displays are used
• A source does not detect the display correctly
• Dolby / DTS audio is not passing correctly
• HDR or 4K compatibility issues occur

IMPORTANT — WebGUI Control Is Supported

The UHD44-EXB230R-K can be controlled through a WebGUI interface.

The WebGUI allows control of:

• Input and output routing
• Presets
• Input names
• Output names
• EDID management
• Scaler mode
• Stream on/off
• CEC control
• Network settings
• Password settings
• Panel lock
• Beep setting
• LCD settings
• Serial baud rate
• Firmware update
• Factory reset
• Reboot

The default matrix IP address listed in the manual is 192.168.1.100. The manual also explains that the IP can be checked through the front panel menu or RS-232 command.

IMPORTANT — RS-232 and LAN Control Are Supported

The UHD44-EXB230R-K supports external control through RS-232 and LAN.

This makes the matrix suitable for professional AV control systems and automation setups.

Ports and Panel Layout

Step-by-Step Setup

1. Connect HDMI source devices to HDMI INPUT 1–4 on the matrix.

Examples include Blu-ray players, cable boxes, satellite receivers, streaming devices, media players, PCs, DVRs, NVRs, HDMI switch outputs, or HDMI matrix outputs.

1. Connect local displays to HDMI OUTPUT 1–4 if local HDMI displays are needed.
2. Connect CAT cable from HDBT OUTPUT 1–4 on the matrix to HDBT IN on each Receiver.
3. Connect each Receiver HDMI OUT to a TV, monitor, projector, or display.
4. Connect the AC 100–240V power cable to the matrix.
5. Power on the matrix, HDMI sources, displays, and connected equipment.
6. Route each output by pressing the desired OUTPUT button first, then the desired INPUT button.
7. If using audio extraction, connect coaxial or balanced analog audio outputs to an AVR, amplifier, speaker system, or audio device.
8. If using Receiver-side audio output, connect a 3.5mm audio device to the Receiver AUDIO OUT port.
9. If using IR control, connect IR Receiver and IR Blaster cables based on the control direction needed.
10. If using WebGUI control, connect the TCP/IP port to a PC or router with CAT cable.
11. Set the PC IP address to the same network segment as the matrix.
12. Open the matrix IP address in a browser and log in to the WebGUI.
13. If using RS-232 control, connect the RS-232 cable from the matrix to a PC or control system.
14. Configure EDID, scaler, routing, CEC, presets, and network settings as needed.
15. Test video, audio, IR, WebGUI, RS-232, local HDMI output, and HDBaseT Receiver output.

CAT Cable Requirement — Critical

Use high-quality CAT5e / CAT6 / CAT7 cable for HDBaseT extension.

Poor CAT cable may cause:

• No video
• Flickering
• Black screen
• Receiver not powering on
• HDBT link issues
• Connection signal indicator flashing
• HDMI signal issues
• IR control failure
• RS-232 pass-through issues
• Audio dropouts

Use direct, properly terminated CAT cable whenever possible.

HDMI Cable Requirement — Critical

Use high-quality HDMI cables, especially for 4K@60Hz.

The manual recommends Premium High Speed HDMI cables.

Poor HDMI cables may cause:

• No picture
• Flickering
• Black screen
• HDR issues
• Dolby Vision issues
• HDMI source not detected
• Local HDMI output not working
• Receiver HDMI OUT not working
• HDCP handshake issues
• Audio dropouts

Power Requirement — Critical

The UHD44-EXB230R-K uses AC power at the matrix Transmitter.

If a Receiver does not power on, check the matrix power, CAT cable, HDBT output, and Receiver HDBT IN connection.

Understanding the Matrix Transmitter

The matrix Transmitter is the main unit installed near the HDMI sources and control equipment.

It has:

• Four HDMI inputs
• Four HDMI local outputs
• Four HDBaseT outputs
• Four coaxial audio outputs
• Four balanced analog audio outputs
• IR IN and IR OUT ports
• TCP/IP port
• RS-232 port
• OLED screen
• Front panel routing buttons
• Menu controls
• Power button
• Lock button
• AC power input

The matrix routes any of the four HDMI inputs to any of the four output zones.

Understanding the Receiver

Each Receiver is installed near a remote display.

Each Receiver has:

• HDBT IN
• HDMI OUT
• AUDIO OUT
• IR IN
• IR OUT
• RS-232
• SERVICE port
• DC 24V input
• Power LED
• Connection signal indicator
• Data signal indicator

The Receiver receives HDMI, control, IR, and power through the CAT cable from the matrix and outputs HDMI to the remote display.

Understanding the Application Example

The application diagram shows HDMI source devices such as a DVD or Blu-ray player connected to the matrix inputs. The matrix connects to local HDMI displays and remote Receivers through HDBT outputs. Receivers connect to TVs using HDMI. The diagram also shows audio extraction to speakers or an amplifier, PC control through the control port, and IR connections for control.

This shows the main use case: routing multiple HDMI sources to multiple local and remote displays while also supporting extracted audio, IR control, and system control.

Understanding Receiver LED Indicators

Use these LEDs first when troubleshooting Receiver-side signal issues.

Supported Video and Audio

The UHD44-EXB230R-K supports video formats including:

Supported HDMI audio formats include:

Supported coaxial audio formats include:

Supported balanced analog audio format:

Supported Technical Specifications

What Source Devices Is the UHD44-EXB230R-K Compatible With?

The UHD44-EXB230R-K is compatible with HDMI source devices such as:

• Blu-ray players
• DVD players
• Cable boxes
• Satellite receivers
• Streaming devices
• Media players
• Desktop PCs
• Laptops with HDMI output
• DVRs
• NVRs
• Game consoles
• AV receivers with HDMI output
• HDMI switch outputs
• HDMI matrix outputs

The source must output a supported HDMI resolution up to 4K@60Hz.

What Displays Is the UHD44-EXB230R-K Compatible With?

The UHD44-EXB230R-K can connect to HDMI displays such as:

• 4K TVs
• 1080p TVs
• Monitors
• Projectors
• Commercial displays
• Classroom displays
• Conference room displays
• Retail displays
• Digital signage displays
• Restaurant displays
• Bar displays
• Control room displays
• Remote display locations

For 4K@60Hz, the display must support 4K@60Hz input.

What Audio Devices Is the UHD44-EXB230R-K Compatible With?

The UHD44-EXB230R-K can connect to audio devices such as:

• AV receivers
• Amplifiers
• Speakers
• Audio processors
• Coaxial audio devices
• Balanced audio systems
• Unbalanced analog audio systems
• 3.5mm audio devices at the Receiver side

Use the correct audio output based on the audio system being connected.

Frequently Asked Questions

Q: What is the OREI UHD44-EXB230R-K used for? 
A: It is used to route four HDMI sources to four output zones with local HDMI outputs, remote HDBaseT Receiver outputs, audio extraction, IR, RS-232, LAN, and WebGUI control.

Q: Is the UHD44-EXB230R-K a matrix? 
A: Yes. It is a 4x4 HDMI HDBaseT matrix extender.

Q: How many HDMI inputs does it have? 
A: It has four HDMI inputs.

Q: How many HDMI outputs does it have? 
A: It has four local HDMI outputs and four HDBaseT mirrored outputs.

Q: Are the HDMI and HDBaseT outputs independent? 
A: Each HDMI output is mirrored with its matching HDBaseT output. For example, HDMI OUTPUT 1 and HDBT OUTPUT 1 follow the same selected input.

Q: Does it support 4K@60Hz? 
A: Yes. It supports video resolutions up to 4K@60Hz.

Q: Does it support 8K? 
A: No. It supports up to 4K@60Hz.

Q: Does it support 4K@120Hz? 
A: No. It does not support 4K@120Hz.

Q: What HDMI version does it support? 
A: It supports HDMI 2.0b.

Q: What HDCP version does it support? 
A: It supports HDCP 2.2.

Q: What video bandwidth does it support? 
A: It supports 18Gbps video bandwidth.

Q: Does it support HDR? 
A: Yes. It supports HDR10, HDR10+, Dolby Vision, and HLG.

Q: Does it support Dolby Vision? 
A: Yes. Dolby Vision is supported.

Q: Does it support downscaling? 
A: Yes. It supports 4K to 1080p downscaling on all output ports.

Q: How far can it extend HDMI over HDBaseT? 
A: The product is designed to extend HDMI up to 230ft using HDBaseT over CAT cable.

Q: What CAT cable should I use? 
A: Use high-quality CAT5e, CAT6, or CAT7 cable.

Q: Can I connect the HDBaseT output through a network switch? 
A: No. HDBaseT requires a direct CAT cable connection between the matrix HDBT output and the Receiver HDBT IN.

Q: Is this AV over IP? 
A: No. It is an HDBaseT matrix extender, not an AV-over-IP system.

Q: Does it support Power over Cable? 
A: Yes. The Receivers are powered through CAT cable from the matrix.

Q: Do the Receivers need separate power adapters? 
A: Normally no. The Receivers get power through the CAT cable. Each Receiver also has a DC 24V input if needed.

Q: What power does the matrix use? 
A: The matrix uses AC 100–240V, 50/60Hz power.

Q: Does it support audio extraction? 
A: Yes. It supports coaxial and balanced analog audio extraction.

Q: Does audio extraction follow the video output? 
A: Yes. Audio extraction follows the video output of OUTPUT 1–4.

Q: What HDMI audio formats are supported? 
A: It supports LPCM 2.0 / 2.1 / 5.1 / 6.1 / 7.1, Dolby Digital, Dolby TrueHD, Dolby Digital Plus, DTS-ES, DTS-HD Master Audio, DTS-HD HRA, and DTS:X.

Q: What coaxial audio formats are supported? 
A: Coaxial audio supports PCM 2.0, Dolby Digital / Plus, and DTS 2.0 / 5.1.

Q: What balanced analog audio format is supported? 
A: Balanced analog audio supports PCM 2.0.

Q: Does the Receiver have audio output? 
A: Yes. Each Receiver includes a 3.5mm AUDIO OUT port.

Q: Does it support IR control? 
A: Yes. It supports bi-directional IR control.

Q: Can I control the source from the remote display side? 
A: Yes. Use the IR Blaster at the matrix side and IR Receiver at the Receiver side.

Q: Can I control the TV from the matrix side? 
A: Yes. Use the IR Receiver at the matrix side and IR Blaster at the Receiver side.

Q: Does it support CEC control? 
A: Yes. CEC control is supported.

Q: Does it support EDID management? 
A: Yes. EDID can be managed through the front panel, RS-232, or WebGUI.

Q: How many EDID modes are included? 
A: The matrix includes 21 pre-defined EDID settings, 2 user-defined EDID modes, and copy EDID modes from HDMI or HDBaseT outputs.

Q: Does it support WebGUI control? 
A: Yes. The matrix can be controlled using the WebGUI.

Q: What is the default IP address? 
A: The manual lists the default IP address as 192.168.1.100.

Q: What are the default WebGUI passwords? 
A: The manual lists User password as user and Admin password as admin.

Q: Does it support RS-232 control? 
A: Yes. RS-232 control is supported.

Q: What is the default RS-232 baud rate? 
A: The manual lists 115200 as the serial port baud rate.

Q: How do I switch inputs using the front panel? 
A: Press the desired OUTPUT button first, then press the desired INPUT button.

Q: What does the LOCK button do? 
A: It locks the front panel buttons.

Q: What does the Receiver connection signal indicator mean? 
A: Solid means the Transmitter and Receiver are connected, flashing means the connection is poor, and off means they are not connected.

Q: What does the Receiver data signal indicator mean? 
A: Solid means HDMI signal with HDCP, flashing means HDMI signal without HDCP, and off means no HDMI signal.

Q: What should I do if I cannot connect to the WebGUI? 
A: Connect the TCP/IP port of the matrix to a PC or router with CAT cable. Set the PC IP address to the same network segment as the matrix, but not the exact same IP address.

Q: What should I do if there is no video output? 
A: Check the HDMI source, selected input/output route, HDMI cable, CAT cable, Receiver connection, display input, EDID setting, and Receiver LED indicators.

Q: What should I do if 4K@60Hz does not work? 
A: Use Premium High Speed HDMI cables, use high-quality CAT cable, confirm the source and display support 4K@60Hz, check EDID settings, and test with a lower resolution.

Q: What should I do if audio extraction does not work? 
A: Check the selected output route, source audio format, EDID setting, coaxial or balanced audio wiring, and whether the connected audio device supports the selected format.

Q: What should I do if IR control does not work? 
A: Confirm the IR Receiver and IR Blaster are connected to the correct IR IN / IR OUT ports and placed near the correct remote or device IR window.

Q: Does the UHD44-EXB230R-K need external power? 
A: Yes. The matrix requires AC 100–240V power. The Receivers are powered through CAT cable using Power over Cable.