UHDS-102 Overview and Use Cases

What Is the UHDS-102?

The OREI UHDS-102 is a 1x2 HDMI 2.0 splitter that duplicates one HDMI source to two displays simultaneously. Both connected displays show the same video and receive the same HDMI audio.

The UHDS-102 supports resolutions up to 4K@60Hz, 18Gbps bandwidth, HDCP 2.3/1.4, HDR10+, Dolby Vision, HLG, multichannel audio, CEC between the input and Output 1, and two EDID modes.

Its compact metal enclosure makes it suitable for home entertainment, conference rooms, classrooms, retail displays, digital signage, and commercial AV installations.

IMPORTANT — UHDS-102 Is a 1x2 HDMI Splitter

The UHDS-102 mirrors one HDMI source. It cannot create two independent screens or route a different source to each display.

IMPORTANT — Supports 4K@60Hz

The HDMI source, cables, displays, and EDID setting must support the desired video format.

IMPORTANT — Both Displays Show the Same Content

The UHDS-102 sends the same HDMI source to Outputs 1 and 2.

When connected to a computer, the splitter duplicates the computer screen. It does not create an extended desktop.

IMPORTANT — The UHDS-102 Does Not Downscale

The manual specifically states that the UHDS-102 does not downscale 4K video to 1080p.

When using a 1080p monitor, set the source resolution to 1080p. For mixed 4K and 1080p displays, use a common resolution supported by both displays.

IMPORTANT — STD and TV EDID Modes

The UHDS-102 has a two-position STD/TV EDID switch.

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

Understanding STD EDID Mode

STD mode reports a fixed 1080p video and two-channel audio capability to the source.

Use STD mode when:

1. A 1080p display is connected
2. One display does not show a 4K source
3. The displays have different capabilities
4. Audio compatibility problems occur
5. A basic, widely compatible format is needed 
    
   STD mode is a useful troubleshooting setting because it requests 1080p video and stereo audio.

Understanding TV EDID Mode

TV mode copies the EDID from the display connected to HDMI Output 1.

If Output 1 is not connected, the splitter copies the EDID from Output 2.

Use TV mode when:

1. Output 1 is the primary display
2. The source should follow the primary display’s capabilities
3. 4K, HDR, Dolby Vision, or multichannel audio is required
4. Both displays support the copied video and audio format 
    
   If Display 2 has lower capabilities than Display 1, Display 2 may not show video or play audio correctly.

IMPORTANT — CEC Is Limited to Output 1

The UHDS-102 supports CEC communication between:

1. HDMI INPUT
2. HDMI OUTPUT 1 
    
   CEC support is not listed for Output 2. 
    
   For CEC functions such as compatible device control or power commands, connect the primary display to Output 1. Actual CEC behavior depends on the connected devices and their settings.

Supported Color Formats

The source and displays must support the selected color format and depth.

Supported HDMI Audio

Supported sampling rates include:

1. 44.1kHz
2. 48kHz
3. 88.2kHz
4. 96kHz
5. 176.4kHz
6. 192kHz 
    
   Audio compatibility depends on the EDID setting and capabilities of the connected displays or audio equipment.

IMPORTANT — This Is Not an Audio Extractor

The UHDS-102 passes audio through HDMI but does not provide separate audio outputs.

Use a dedicated HDMI audio extractor if separate audio output is needed.

Ports, Controls, and Indicators

Step-by-Step Setup

1. Turn off the HDMI source and displays.
2. Connect the source to the UHDS-102 HDMI INPUT.
3. Connect the primary display to HDMI OUTPUT 1.
4. Connect the second display to HDMI OUTPUT 2.
5. Select the required EDID mode:
   1. Use STD for fixed 1080p video and stereo audio.
   2. Use TV to copy the capabilities of Display 1.
6. Connect the included DC 5V/1A power adapter.
7. Turn on the displays and HDMI source.
8. Confirm that the red INPUT LED illuminates.
9. Confirm that the corresponding OUTPUT LEDs illuminate.
10. Test video and HDMI audio on both displays.

HDMI Cable Requirements — Critical

The manual recommends Premium High Speed HDMI cables.

The cable-length guidance applies to HDMI input and output connections.

Poor-quality or excessively long cables may cause:

1. No video
2. Flickering
3. Intermittent black screens
4. 4K@60Hz not working
5. HDR or Dolby Vision failure
6. HDCP errors
7. Audio dropouts
8. One output not working

Power Requirement — Critical

Use the included power adapter or a compatible replacement with the correct voltage, polarity, connector, and current rating.

Application Example

The application diagram shows:

1. A DVD or Blu-ray player connected to HDMI INPUT.
2. A power adapter connected to the splitter.
3. Two UHD TVs connected to HDMI Outputs 1 and 2.

Both televisions display the same source.

Package Contents

The package includes:

1. 1 × UHDS-102 HDMI splitter
2. 1 × Power adapter
3. 1 × User manual 
    
   HDMI cables are not listed as included.

Technical Specifications

Compatible HDMI Sources

The UHDS-102 can be used with compatible HDMI sources such as:

1. DVD players
2. Blu-ray players
3. Cable boxes
4. Satellite receivers
5. Streaming media players
6. Game consoles
7. Desktop computers
8. Laptops with HDMI output
9. DVRs and NVRs
10. Digital signage players
11. HDMI switch outputs
12. HDMI matrix outputs 
     
    The source must output a resolution and audio format supported by the splitter and connected displays.

Compatible Displays

The UHDS-102 can connect to:

1. 4K televisions
2. 1080p televisions
3. Monitors
4. Projectors
5. Commercial displays
6. Conference room displays
7. Classroom displays
8. Retail displays
9. Digital signage displays
10. Home theater displays 
     
    For 4K@60Hz, the display and HDMI cable must support that signal.

Frequently Asked Questions

Q: What is the OREI UHDS-102 used for? 
A: It duplicates one HDMI source to two HDMI displays simultaneously.

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

Q: How many HDMI outputs does it have? 
A: It has two HDMI outputs.

Q: Do both displays show the same content? 
A: Yes. Both outputs receive the same source.

Q: Can it show different content on each display? 
A: No. It is a splitter, not a matrix switch.

Q: Can it extend a computer desktop across two monitors? 
A: No. It mirrors the same computer image on both displays.

Q: Can I use only one HDMI output? 
A: Yes.

Q: Does the UHDS-102 support 4K@60Hz? 
A: Yes. It supports resolutions up to 4K@60Hz.

Q: Does it support 8K? 
A: No. Its maximum listed resolution is 4K@60Hz.

Q: Does it support 4K@120Hz? 
A: No.

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

Q: What HDCP version does it support? 
A: HDCP 2.3 and HDCP 1.4.

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

Q: Does it support downscaling? 
A: No. The manual specifically states that it does not downscale 4K to 1080p.

Q: Why does my 1080p monitor not display a 4K source? 
A: Set the HDMI source resolution to 1080p. The splitter does not downscale the 4K signal.

Q: Can I use one 4K display and one 1080p display? 
A: Yes, but set the source to 1080p or another resolution supported by both displays.

Q: What is STD EDID mode? 
A: STD uses a fixed EDID requesting 1080p video and two-channel audio.

Q: What is TV EDID mode? 
A: TV copies the EDID from Output 1. If Output 1 is disconnected, it copies Output 2.

Q: Which output should be used for the primary display? 
A: Use Output 1, especially when using TV EDID mode or CEC.

Q: Does it support CEC? 
A: Yes. CEC is supported between the HDMI input and Output 1.

Q: Is CEC supported through Output 2? 
A: CEC support is not listed for Output 2.

Q: Does it support Dolby TrueHD and DTS-HD Master Audio? 
A: Yes.

Q: Does it extract audio? 
A: No separate audio extraction outputs are provided.

Q: Does it have optical or analog audio output? 
A: No.

Q: Does it support ARC or eARC? 
A: ARC and eARC are not listed.

Q: What power adapter does it use? 
A: It uses a DC 5V/1A power adapter.

Q: What is the maximum power consumption? 
A: 1.41W.

Q: What HDMI cable should I use for 4K@60Hz? 
A: Use a Premium High Speed HDMI cable and keep each HDMI input/output cable within 5m or 16ft.

Q: What do the red LEDs indicate? 
A: The INPUT LED indicates a connected source. Each OUTPUT LED indicates a connected display.

Q: Why is there no video on either display? 
A: Try a lower source resolution, replace the HDMI cables, and change the EDID setting. Also check the power adapter and INPUT LED.

Q: Why does only one display show video? 
A: Check the affected display’s HDMI input, power, cable, and output LED. Verify that it supports the source format.

Q: Why does 4K@60Hz not work? 
A: Confirm that the source and displays support 4K@60Hz, use Premium High Speed HDMI cables, and keep each cable within 5m or 16ft.

Q: Why is there no audio? 
A: Try STD mode for stereo audio, or confirm that both displays support the audio format copied in TV mode.

Q: Does the UHDS-102 require external power? 
A: Yes. Connect the included DC 5V/1A power adapter.