UHD-EXB330AUR-K Overview and Use Cases

What Is the UHD-EXB330AUR-K?

The OREI UHD-EXB330AUR-K is an 18Gbps HDMI over HDBaseT extender kit with bi-directional IR, RS-232, LAN pass-through, USB KVM, ARC, audio extraction, and PoC. It extends HDMI video and audio from a source to a remote display over a single CAT6a / CAT7 cable.

The kit includes a Transmitter and Receiver. The HDMI source connects to HDMI IN on the Transmitter, the remote display connects to HDMI OUT on the Receiver, and a CAT6a / CAT7 cable connects the Transmitter HDBT OUT to the Receiver HDBT IN.

The UHD-EXB330AUR-K supports HDCP 2.2 / 1.4 and DVI 1.0, with a video bandwidth of 18Gbps. It supports video resolutions up to 4K@60Hz 4:4:4, HDR, HDR10+, Dolby Vision, HLG, bi-directional IR, RS-232 pass-through, CEC pass-through, USB KVM, LAN pass-through, ARC, S/PDIF audio input/output, analog L/R audio output, and PoC. It extends 4K signals up to 296ft / 90m and 1080p signals up to 328ft / 100m over a single CAT6a / CAT7 cable. 

The UHD-EXB330AUR-K is useful for home theaters, classrooms, conference rooms, control rooms, projector setups, AV racks, commercial AV installations, and any setup where HDMI, USB control, audio, IR, RS-232, and LAN need to be extended over one CAT cable.

IMPORTANT — UHD-EXB330AUR-K Supports 4K@60Hz 4:4:4

The UHD-EXB330AUR-K supports video resolutions up to 4K@60Hz 4:4:4.

Supported video formats include:

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

IMPORTANT — Maximum Distance Depends on Resolution

The UHD-EXB330AUR-K supports different extension distances depending on the resolution.

For best performance, use high-quality CAT6a / CAT7 cable.

Poor cable quality, bad terminations, couplers, patch panels, or long HDMI cables can reduce performance.

IMPORTANT — Use a Direct CAT6a / CAT7 Cable Connection

The UHD-EXB330AUR-K should be connected directly from the Transmitter HDBT OUT to the Receiver HDBT IN.

Do not connect the HDBT cable through:

• Network switch 
• Router 
• Internet network 
• LAN switch 
• Standard Ethernet port 
• Home or office data network 

This is an HDBaseT extender, not an AV-over-IP extender.

The CAT cable is used as a direct HDBaseT signal path between the Transmitter and Receiver.

IMPORTANT — PoC Power Is Supported

The UHD-EXB330AUR-K supports PoC, which means Power over Cable.

Only one side needs the included DC 24V/1A locking power adapter.

The manual notes that either the Transmitter or Receiver can be connected to the 24V/1A power supply, and the other unit does not need a separate power supply.

If one unit does not power on, check the power adapter, CAT cable, and HDBT connection.

IMPORTANT — USB KVM Is Supported

The UHD-EXB330AUR-K supports USB KVM.

This allows USB devices connected at the Receiver side to communicate with the computer connected at the Transmitter side.

Typical setup:

This is useful when the computer/source is located near the Transmitter, but the user wants keyboard and mouse control at the display side.

IMPORTANT — ARC Function Is Supported

The Transmitter supports ARC function.

ARC can return audio from the display side back through the extender system.

The audio output logic can be changed using the SWITCH button on the panel.

Use ARC when the display-side HDMI device supports Audio Return Channel and the system needs TV/display audio returned to the source/audio side.

IMPORTANT — Audio Output Switching Is Included

The UHD-EXB330AUR-K includes a SWITCH button for selecting the audio source for the Transmitter SPDIF OUT and L/R OUT ports.

Use the SWITCH button if the audio output is not coming from the desired source.

IMPORTANT — Bi-Directional IR Is Supported

The UHD-EXB330AUR-K supports bi-directional IR.

This means IR control can work in both directions:

Typical source-control setup:

• Connect IR Receiver cable to IR IN on the Receiver 
• Connect IR Blaster cable to IR OUT on the Transmitter 
• Place the IR Receiver near the remote display 
• Place the IR Blaster near the source device IR window 

Typical display-control setup:

• Connect IR Receiver cable to IR IN on the Transmitter 
• Connect IR Blaster cable to IR OUT on the Receiver 
• Place the IR Receiver near the source-side control location 
• Place the IR Blaster near the display IR window 

IMPORTANT — RS-232 Pass-Through Is Supported

The UHD-EXB330AUR-K supports RS-232 pass-through using 3-pin Phoenix connectors.

RS-232 commands can pass from:

• Transmitter to Receiver 
• Receiver to Transmitter 

Use RS-232 for:

• Projector control 
• Display control 
• Control processor integration 
• Matrix control 
• Automation systems 
• Command signal extension 

IMPORTANT — LAN Pass-Through Is Supported

The UHD-EXB330AUR-K includes LAN ports.

This allows LAN/network connection to be passed along with the HDMI extension system.

IMPORTANT — Receiver Has S/PDIF IN

The Receiver includes SPDIF IN.

This allows optical audio from the Receiver/display side to be returned to the Transmitter audio outputs when SPDIF mode is selected.

This is useful when audio needs to be returned from the display side or an audio device near the Receiver.

IMPORTANT — Transmitter Has S/PDIF OUT and L/R OUT

The Transmitter includes:

The L/R audio format is PCM 2.0.

If analog audio does not work, set the source or returned audio format to PCM / Stereo.

IMPORTANT — HDMI Cable Length Matters

The manual recommends using Premium High-Speed HDMI cables.

Poor HDMI cables may cause no video, flickering, black screen, HDR issues, HDCP issues, or unstable 4K@60Hz performance.

Ports and Panel Layout

Step-by-Step Setup

1. Connect the HDMI source device to HDMI IN on the Transmitter. 
   Examples include a Blu-ray player, cable box, media player, laptop, desktop PC, HDMI matrix output, DVR, or NVR. 
2. Connect HDBT OUT on the Transmitter to HDBT IN on the Receiver using CAT6a / CAT7 cable. 
3. Connect HDMI OUT on the Receiver to the remote display. 
4. Connect the included DC 24V/1A locking power adapter to either the Transmitter or Receiver. 
5. If using USB KVM, connect the computer to USB HOST on the Transmitter and connect keyboard / mouse to the Receiver USB 2.0 ports. 
6. If using LAN pass-through, connect the router or hub to the Transmitter LAN port and connect the PC or laptop to the Receiver LAN port. 
7. If using IR control, connect the IR Receiver and IR Blaster cables based on the direction of control needed. 
8. If using RS-232, connect the Phoenix connector wiring to both units. 
9. If using audio return, connect SPDIF IN on the Receiver or enable ARC as needed. 
10. Connect SPDIF OUT or L/R OUT on the Transmitter to an audio device if audio extraction or returned audio output is needed. 
11. Power on the HDMI source, display, Transmitter, Receiver, and connected USB/audio/control devices. 
12. Use the SWITCH button if the audio output source needs to be changed. 
13. Check the Power, ARC, SPDIF, Connection Signal, and Data Signal indicators. 
14. Test video, audio, USB KVM, LAN, IR, RS-232, and ARC. 

CAT Cable Requirement — Critical

Use high-quality CAT6a / CAT7 cable.

Poor CAT cable may cause:

• No picture 
• Flickering 
• Black screen 
• Poor connection indicator status 
• HDBaseT link failure 
• Audio dropouts 
• USB KVM issues 
• LAN pass-through issues 
• IR control issues 
• RS-232 issues 
• 4K@60Hz not working 

Use direct cable runs whenever possible.

HDMI Cable Requirement — Critical

Use Premium High-Speed HDMI cables.

For 4K@60Hz 4:4:4, use HDMI cables rated for 18Gbps.

Poor HDMI cables may cause:

• No signal 
• Flickering 
• Black screen 
• HDR issues 
• Audio dropouts 
• HDCP handshake issues 
• No remote output 

Power Requirement — Critical

The UHD-EXB330AUR-K uses one DC 24V/1A locking power adapter.

Only one side needs to be powered because PoC sends power to the other unit through the CAT cable.

Understanding the Transmitter

The Transmitter is installed near the HDMI source.

It has:

• HDMI IN 
• HDBT OUT 
• USB HOST 
• LAN 
• IR IN and IR OUT 
• RS-232 
• SPDIF OUT 
• L/R OUT 
• SERVICE firmware port 
• DC 24V power input 
• Power, ARC, and SPDIF LEDs 
• Audio SWITCH button 

The Transmitter sends HDMI, audio, USB, LAN, IR, RS-232, CEC, and power over CAT cable to the Receiver.

Understanding the Receiver

The Receiver is installed near the remote display.

It has:

• HDBT IN 
• HDMI OUT 
• USB 2.0 ports 
• LAN 
• IR IN and IR OUT 
• RS-232 
• SPDIF IN 
• SERVICE firmware port 
• DC 24V power input 
• Power, ARC, and SPDIF LEDs 
• Audio SWITCH button 

The Receiver outputs HDMI to the display and provides USB device ports for KVM control.

Understanding USB KVM

USB KVM lets the user control a computer from the remote display side.

Typical setup:

This allows keyboard and mouse control at the display location.

Understanding ARC and Audio Return

ARC allows audio from the display side to return through the extender system.

The Transmitter can output returned audio through:

• SPDIF OUT 
• L/R OUT 

Use the SWITCH button to choose whether the audio output comes from ARC, Receiver SPDIF IN, or extracted Transmitter audio.

Understanding Audio Output Switching

The ARC and SPDIF LEDs show which audio source is active.

If the wrong audio is playing or no audio is heard, press the SWITCH button and check the LED status.

For analog L/R output, use PCM 2.0 audio for best compatibility.

Understanding Bi-Directional IR

Bi-directional IR lets remote control signals travel both ways through the extender.

Use the IR Receiver cable where the remote control will be used.

Use the IR Blaster cable near the device being controlled.

IR remote working distance is listed as 0–5m / 0–8m with ±45° vertical direction.

Understanding RS-232 Pass-Through

RS-232 pass-through allows command signals to travel between Transmitter and Receiver.

The RS-232 command can pass:

• Transmitter to Receiver 
• Receiver to Transmitter 

Use the included 3-pin Phoenix connectors for RS-232 wiring.

Understanding LAN Pass-Through

LAN pass-through allows a network connection to travel through the extender system along with HDMI.

Example:

This can reduce the need for a second network cable at the display location.

Understanding the Signal Indicators

Use these indicators when troubleshooting link or HDMI source problems.

Supported Video and Audio

The UHD-EXB330AUR-K supports video formats including:

Supported audio formats include:

Supported Technical Specifications

What Source Devices Is the UHD-EXB330AUR-K Compatible With?

The UHD-EXB330AUR-K is compatible with HDMI source devices such as:

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

For USB KVM, the source computer must also be connected to the Transmitter USB HOST port.

What Displays Is the UHD-EXB330AUR-K Compatible With?

The UHD-EXB330AUR-K can connect to HDMI displays such as:

• 4K TVs 
• 1080p TVs 
• Projectors 
• Monitors 
• Commercial displays 
• Conference room displays 
• Classroom displays 
• Control room displays 
• Remote workstation displays 

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

What USB Devices Is the UHD-EXB330AUR-K Compatible With?

The Receiver USB 2.0 ports can connect to USB devices such as:

• Keyboard 
• Mouse 
• USB control devices 
• Basic USB peripherals 

For best performance, use the USB KVM function for keyboard, mouse, and basic control devices.

What Audio Devices Is the UHD-EXB330AUR-K Compatible With?

The Transmitter audio outputs can connect to:

• Amplifiers 
• AV receivers 
• Powered speakers 
• Audio processors 
• Distributed audio systems 
• Conference room audio systems 

Use SPDIF OUT for optical audio and L/R OUT for analog stereo PCM audio.

Frequently Asked Questions

Q: What is the OREI UHD-EXB330AUR-K used for? 
A: The UHD-EXB330AUR-K is used to extend 4K@60Hz HDMI video, HDMI audio, USB KVM, LAN, ARC, IR, RS-232, CEC, and audio output over a single CAT6a / CAT7 cable.

Q: Does the UHD-EXB330AUR-K support 4K@60Hz? 
A: Yes. It supports up to 4K@60Hz 4:4:4.

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 HDCP version does it support? 
A: It supports HDCP 2.2 and HDCP 1.4.

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

Q: How far can it extend 4K video? 
A: It extends 4K2K signals up to 296ft / 90m.

Q: How far can it extend 1080p video? 
A: It extends 1080p signals up to 328ft / 100m.

Q: What CAT cable should I use? 
A: Use CAT6a or CAT7 cable.

Q: Can I connect it through a network switch? 
A: No. The HDBT OUT and HDBT IN ports should be connected directly with CAT cable.

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

Q: Does it support PoC? 
A: Yes. It supports Power over Cable.

Q: Do both units need separate power adapters? 
A: No. Only one unit needs the included DC 24V/1A locking power adapter. The other unit is powered through the CAT cable.

Q: Can the power adapter connect to either Transmitter or Receiver? 
A: Yes. The manual states either unit can be connected to the 24V/1A power supply.

Q: Does it support USB KVM? 
A: Yes. The Transmitter has USB HOST and the Receiver has two USB 2.0 ports.

Q: What is USB KVM used for? 
A: It lets you connect a keyboard and mouse at the Receiver side to control a computer connected at the Transmitter side.

Q: Does it support LAN pass-through? 
A: Yes. It includes LAN ports on both Transmitter and Receiver.

Q: Does it support ARC? 
A: Yes. ARC function is supported.

Q: Does it support CEC? 
A: Yes. CEC pass-through is supported.

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

Q: Which IR cable goes where for source control? 
A: Connect the IR Receiver to Receiver IR IN and the IR Blaster to Transmitter IR OUT.

Q: Which IR cable goes where for display control? 
A: Connect the IR Receiver to Transmitter IR IN and the IR Blaster to Receiver IR OUT.

Q: Does it support RS-232? 
A: Yes. It supports RS-232 pass-through in both directions.

Q: Does the Transmitter have HDMI loop out? 
A: No HDMI loop out is listed for this model.

Q: Does the Receiver have audio output? 
A: The Receiver has SPDIF IN, while the Transmitter has SPDIF OUT and L/R OUT for audio output.

Q: What audio formats does HDMI support? 
A: HDMI supports LPCM up to 7.1, Dolby Digital, Dolby TrueHD, Dolby Digital Plus, DTS-ES, DTS-HD Master, DTS-HD HRA, and DTS:X.

Q: What audio format does L/R OUT support? 
A: L/R OUT supports PCM 2.0.

Q: What audio formats does SPDIF support? 
A: SPDIF supports LPCM 2.0, Dolby Digital, Dolby Digital Plus, and DTS.

Q: What should I do if there is no video? 
A: Check power, HDMI source output, HDMI cables, CAT6a / CAT7 cable, HDBT connection, and the Connection Signal and Data Signal indicators.

Q: What should I do if the connection signal indicator is flashing? 
A: The connection between Transmitter and Receiver is poor. Check CAT cable quality, terminations, cable length, and direct connection.

Q: What should I do if the connection signal indicator is dark? 
A: The Transmitter and Receiver are not connected. Check the CAT cable and confirm HDBT OUT is connected to HDBT IN.

Q: What should I do if the data signal indicator is dark? 
A: There is no HDMI signal. Check the HDMI source, HDMI cable, and source output settings.

Q: What should I do if 4K@60Hz does not work? 
A: Use Premium High-Speed HDMI cables, use CAT6a / CAT7 cable within 296ft / 90m, confirm the source and display support 4K@60Hz, and test with 1080p first.

Q: What should I do if USB KVM does not work? 
A: Confirm the computer is connected to Transmitter USB HOST, the keyboard or mouse is connected to Receiver USB 2.0, and the CAT link is active.

Q: What should I do if LAN pass-through does not work? 
A: Check the LAN cable on both sides, confirm the router/hub connection, and verify the connected PC or laptop network settings.

Q: What should I do if audio output does not work? 
A: Use the SWITCH button to select the correct audio source, check the ARC and SPDIF LEDs, and set the source audio to PCM / Stereo for analog output.

Q: What should I do if IR control does not work? 
A: Confirm the IR Receiver and IR Blaster are connected in the correct direction, and place the IR Blaster near the device IR sensor.

Q: What should I do if RS-232 does not work? 
A: Check Phoenix connector wiring and confirm the controlled device and control system use compatible RS-232 settings.

Q: Does the UHD-EXB330AUR-K need external power? 
A: Yes. Connect the included DC 24V/1A locking power adapter to either the Transmitter or Receiver.