UHD-PRO108 Overview and Use Cases

What Is the UHD-PRO108? 

The OREI UHD-PRO108 is a 1x8 4K@60Hz HDMI splitter with EDID management and automatic downscaling. It takes one HDMI source and distributes the same signal to eight HDMI displays at the same time. 

The HDMI source connects to HDMI INPUT, and up to eight TVs, monitors, or projectors connect to the HDMI output ports. The product is designed to support mixed display installations where some displays are 4K and others are 1080p. 

The UHD-PRO108 supports HDMI 2.0, HDCP 2.2, 4K@60Hz, YUV 4:4:4, HDR, 3D, plug-and-play operation, EDID DIP switch management, and automatic 4K to 1080p downscaling. The connection diagram shows one DVD/source connected to the HDMI input and eight displays connected to the HDMI outputs. 

The UHD-PRO108 is useful for restaurants, bars, classrooms, conference rooms, churches, retail displays, digital signage, trade shows, control rooms, home AV setups, and any installation where one HDMI source needs to be shown on up to eight displays. 

IMPORTANT — UHD-PRO108 Is a 1x8 HDMI Splitter 

The UHD-PRO108 duplicates one HDMI source to eight HDMI displays. 

This product mirrors one HDMI source. It does not create eight independent screens and does not extend a PC desktop across eight displays. 

IMPORTANT — Supports 4K@60Hz 

The UHD-PRO108 supports video resolutions up to 4K@60Hz. 

To get 4K@60Hz, the HDMI source, HDMI cables, displays, and EDID setting must all support 4K@60Hz. 

IMPORTANT — Automatic 4K to 1080p Downscaling Is Supported 

The UHD-PRO108 includes automatic downscaling. 

This allows a 4K source to work with both 4K and 1080p displays at the same time. 

This is useful for installations where older 1080p displays are mixed with newer 4K displays. 

IMPORTANT — EDID DIP Switch Management Is Included 

The UHD-PRO108 includes a 4-switch EDID DIP switch with 16 EDID options. 

The manual states that before outputting HDMI signal, the splitter reads the connected TV EDID and sends it back to the HDMI source. The source then determines the output mode based on that EDID information. 

Use EDID settings when there is no video, wrong resolution, audio compatibility issue, or mixed display problem. 

IMPORTANT — EDID Switch Positions 

The manual shows switch positions where: 

The unit supports 16 EDID settings based on the 4-switch code. 

Common EDID options include: 

Use the EDID mode that best matches the connected displays and audio system. 

IMPORTANT — Copy Once, MIX1, MIX2, and MIX3 Modes 

The manual lists several special EDID modes. 

These modes are useful for multi-display installations where not all displays support the same resolution or audio format. 

IMPORTANT — All Displays Show the Same Source 

The UHD-PRO108 sends the same HDMI source to every connected display. 

If a laptop or PC is connected, the splitter duplicates the screen. It does not create eight extended desktop monitors. 

IMPORTANT — This Is Not an Audio Extractor 

The UHD-PRO108 supports HDMI audio pass-through, but it does not list separate audio extraction ports. 

If separate audio output is needed for speakers, amplifier, or soundbar, use an HDMI splitter with audio extraction or a dedicated HDMI audio extractor. 

Ports and Panel Layout 

Step-by-Step Setup 

1. Connect the HDMI source device to the HDMI INPUT port on the UHD-PRO108.[Text Wrapping Break]Examples include a DVD player, Blu-ray player, cable box, satellite receiver, streaming device, media player, laptop, desktop PC, DVR, NVR, or HDMI matrix output. 
2. Connect HDMI OUT 1 to the first display. 
3. Connect HDMI OUT 2 through HDMI OUT 8 to additional displays as needed. 
4. Connect the included 12V/1A power adapter. 
5. Set the EDID DIP switch based on the required resolution and audio format. 
6. Power on the HDMI source, displays, and splitter. 
7. Check the power indicator. 
8. Check the output LEDs for connected displays. 
9. Test video and HDMI audio on all connected displays. 

HDMI Cable Requirement — Critical 

Use high-quality HDMI cables rated for the resolution being used. 

Poor HDMI cables may cause: 

• No video 
• Flickering 
• Black screen 
• One output not working 
• 4K@60Hz not working 
• HDR not working 
• HDCP handshake issues 
• Audio dropouts 

For troubleshooting, test each HDMI cable directly between the source and display. 

Power Requirement — Critical 

The UHD-PRO108 uses a 12V/1A power adapter. 

If the power indicator does not turn on, check the power adapter, outlet, and DC power connection. 

Understanding Automatic Downscaling 

Automatic downscaling allows the splitter to send a compatible resolution to lower-resolution displays. 

Use downscaling when: 

• A 4K source is connected 
• Some displays are 4K 
• Some displays are 1080p 
• A 1080p display does not show video from a 4K source 

Downscaling reduces 4K video to 1080p for compatible displays. It does not upgrade 1080p displays to 4K. 

Understanding EDID 

EDID tells the HDMI source what video and audio format to output. 

Use EDID settings when: 

• Displays show no signal 
• One display supports 4K but another supports only 1080p 
• Audio does not work 
• HDR does not display correctly 
• The source outputs the wrong resolution 
• Mixed displays need a common compatible format 

For simple installations, start with an EDID mode that matches the lowest-resolution display. For mixed 4K and 1080p setups, use one of the MIX modes or downscaling-related EDID options. 

Understanding the Connection Diagram 

The connection diagram shows one DVD source connected to the splitter HDMI input. Eight displays are connected to the HDMI output ports. A 12V power adapter powers the splitter. 

This demonstrates the main use case: one HDMI source distributed to eight HDMI displays at the same time. 

Supported Video and Audio 

The UHD-PRO108 supports video formats including: 

Supported audio includes: 

Supported Technical Specifications 

What Source Devices Is the UHD-PRO108 Compatible With? 

The UHD-PRO108 is compatible with HDMI source devices such as: 

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

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

What Displays Is the UHD-PRO108 Compatible With? 

The UHD-PRO108 can connect to HDMI displays such as: 

• 4K TVs 
• 1080p TVs 
• HD TVs 
• Monitors 
• Projectors 
• Commercial displays 
• Digital signage displays 
• Restaurant TVs 
• Bar displays 
• Classroom displays 
• Conference room displays 
• Retail displays 
• Trade show screens 
• Worship facility displays 
• Control room displays 

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

Frequently Asked Questions 

Q: What is the OREI UHD-PRO108 used for?[Text Wrapping Break]A: It is used to split one HDMI source to eight HDMI displays. 

Q: Is the UHD-PRO108 a splitter or extender?[Text Wrapping Break]A: It is an HDMI splitter. It does not extend HDMI over CAT cable by itself. 

Q: How many HDMI inputs does it have?[Text Wrapping Break]A: It has one HDMI input. 

Q: How many HDMI outputs does it have?[Text Wrapping Break]A: It has eight HDMI outputs. 

Q: Does it show the same content on all displays?[Text Wrapping Break]A: Yes. All connected displays show the same HDMI source. 

Q: Can it show different content on each display?[Text Wrapping Break]A: No. It duplicates one HDMI input to all outputs. 

Q: Can it extend my computer desktop across eight screens?[Text Wrapping Break]A: No. It mirrors the same PC screen to multiple displays. 

Q: Does the UHD-PRO108 support 4K@60Hz?[Text Wrapping Break]A: Yes. It supports 4K@60Hz. 

Q: Does it support 8K?[Text Wrapping Break]A: No. It supports up to 4K@60Hz. 

Q: Does it support 4K@120Hz?[Text Wrapping Break]A: No. It does not support 4K@120Hz. 

Q: What HDMI version does it support?[Text Wrapping Break]A: It is compatible with HDMI 1.4 and HDMI 2.0. 

Q: What HDCP version does it support?[Text Wrapping Break]A: It is compatible with HDCP 1.4 and HDCP 2.2. 

Q: Does it support HDR?[Text Wrapping Break]A: Yes. HDR is listed as supported. 

Q: Does it support 3D video?[Text Wrapping Break]A: Yes. 3D video is listed as supported. 

Q: Does it support YUV 4:4:4?[Text Wrapping Break]A: Yes. YUV 4:4:4 is listed as supported. 

Q: Does the UHD-PRO108 support downscaling?[Text Wrapping Break]A: Yes. It supports automatic 4K to 1080p downscaling. 

Q: Can I use mixed 4K and 1080p displays?[Text Wrapping Break]A: Yes. The automatic downscaling feature allows TVs to display 4K and 1080p resolution simultaneously according to each TV’s maximum resolution. 

Q: Does the splitter upscale 1080p to 4K?[Text Wrapping Break]A: No. Downscaling only reduces 4K to 1080p where needed. 

Q: Does it support EDID management?[Text Wrapping Break]A: Yes. It includes a 4-switch EDID DIP switch with 16 EDID options. 

Q: What does Copy Once mean?[Text Wrapping Break]A: Copy Once reads the EDID of the first connected output only. 

Q: What does MIX1 mean?[Text Wrapping Break]A: MIX1 uses the lowest audio format and lowest video format. 

Q: What does MIX2 mean?[Text Wrapping Break]A: MIX2 uses the highest audio format and compose downscaling of video. 

Q: What does MIX3 mean?[Text Wrapping Break]A: MIX3 uses the lowest audio format and compose downscaling of video. 

Q: Does it support audio pass-through?[Text Wrapping Break]A: Yes. The manual lists support for standard audio, DSD, and HD audio. 

Q: Does it extract audio to speakers?[Text Wrapping Break]A: No. Dedicated audio extraction ports are not listed for this model. 

Q: Does it have optical audio output?[Text Wrapping Break]A: Optical audio output is not listed. 

Q: Does it have analog audio output?[Text Wrapping Break]A: Analog audio output is not listed. 

Q: Does it support ARC or eARC?[Text Wrapping Break]A: ARC and eARC are not listed for this model. 

Q: Does it support IR control?[Text Wrapping Break]A: IR control is not listed for this model. 

Q: Does it support RS-232?[Text Wrapping Break]A: RS-232 control is not listed for this model. 

Q: Is it plug and play?[Text Wrapping Break]A: Yes. Plug-and-play operation is listed in the manual. 

Q: What power adapter does it use?[Text Wrapping Break]A: It uses a 12V/1A power adapter. 

Q: What is the maximum power consumption?[Text Wrapping Break]A: Power consumption is listed as less than 8W. 

Q: What should I do if there is no video on all displays?[Text Wrapping Break]A: Check the power adapter, HDMI source, HDMI input cable, EDID setting, and source output resolution. 

Q: What should I do if one display has no video?[Text Wrapping Break]A: Check that output’s HDMI cable, display input, display power, and output LED. Also test the display on another HDMI output. 

Q: What should I do if a 1080p display does not show a 4K source?[Text Wrapping Break]A: Use an EDID mode that supports downscaling or a mixed-display mode such as MIX2 or MIX3. 

Q: What should I do if 4K@60Hz does not work?[Text Wrapping Break]A: Use 18Gbps HDMI cables, confirm the source and display support 4K@60Hz, check EDID settings, and test at 1080p first. 

Q: What should I do if audio does not work?[Text Wrapping Break]A: Try an EDID setting with 2CH audio first, or select an EDID mode that matches the audio format supported by all connected displays. 

Q: Does the UHD-PRO108 need external power?[Text Wrapping Break]A: Yes. Connect the included 12V/1A power adapter to the splitter.