1. This switch can only convert signals from 3 source devices to 1 display.
2. Please clean the dust on the video ports with a dry pad.
3. Make sure all connections are tight.
4. Some displays with multiple HDMI ports do not detect and switch to the correct input automatically, please manually adjust it.
5. Try with other HDMI cables. HDMI 2.0 and above are recommended.
6. Make sure the HDMI cables meet the *HDMI Cable Requirement* (please refer to image)

lt supports 3840 x 2160(4K) at 60 Hz and is backward compatible with 2560 x 1440(2K) at 144 Hz,1920 x 1080(1080p) at 240 Hz.

1. For displaying HDCP content, the relevant devices, including the source devices and the display must all support HDCP.
2. Update your browser to the latest version or use another browser. (Note: Apple Safari is prone to HDCP problems.)

1. Cannot work between 1 source device and 3 displays.
2. This switch does not support eARC and ARC.
3. This switch does not feature auto switch function. Please manually switch by pressing the button on the top.
4. Please connect the power cable on this switch to any USB-A ports/power adapter for some power-hungry devices.

1. Please check the LED lights. If the LED lights are off, please offer enough power supply with USB-C cable for this HDMI splitter.
2. Please make sure you set the right HDMI channel on your HDMI source device and HDMI display devices. If your HDMI source device supports 4K@60Hz, please lower it down to 4K@30Hz to make it work properly.
3. Please connect HDMI source device and HDMI display devices directly to see if they display normally.
4. Please make sure the length of your HDMI cables is within 66ft/20m.e. If you are trying to order an adapter for one HDMI display device and multiple HDMI source devices, please contact us to get the correct product you want.
   
   

1. If the maximum resolution of the two displays is not the same, it will show the lower resolution display.
2. Please manually lower down the video source device's resolution to the minimum resolution of the two displays, or it would only show on the higher resolution display.

1. Clean dust on video ports with a dry pad.
2. Make sure all the connections are tight.
3. Offer extra power supply for this HDMI splitter.

Go into system: Preferences → Sound → Output → Audio. Change the audio output to your TV or other devices.

1. Please make sure all the connection is tight.
2. Please make sure you have turned on all devices and the connection to your devices is right.
3. If the indicator lights are still off, please connect the USB-C port to an external USB power supply for this HDMI splitter.
4. Please contact support@warrky.com if this HDMI splitter still can not work.

1. For displaying HDCP content, the relevant devices, including the source devices and the display must all support HDCP.
2. Update your browser to the latest version or use another browser. (Note: Apple Safari is prone to HDCP problems.)

1. Change to other HDMI cables (HDMI 2.0 or above is recommended) or change to other HDMl ports on your displays/sources, and see if there is any difference.
2. Please wipe the plug with dry pads and make sure all connections are tight.
3. Wake up your connected sources or get your sources powered. Since this switch gets power from the sources, some sources cannot put out enough power individually in some cases (like sleeping mode and power save mode).
4. Turn down your resolution to 2K or 1080P. When your sources output 4K content but your display is not capable of 4K, display issues may happen.
   
5. Some displays with multiple HDMl ports do not detect and switch to the correct input automatically, please manually adjust it.

Please note this switch can only support a single display in Mode 2 (switch between displays) and cannot split the content into two displays. If this product cannot cover your need, please contact us first and we would give you a satisfactory solution.

1. Please check the distance of transmission is less than 2M at 4K@60Hz, and 5M at 4K@30Hz.
2. Please confirm your HDMI cable, host devices, and displays are capable of 4K resolution.

Cannot work with the soundbar since it can not extract audio. Do not support ARC function.

1. Please check your LED indicator light:-Upon Power Connection: All the LED indicators will flash once.-Upon Network Transmission:Indicator-Green: Steady onIndicator-Orange: Flicker
2. When connecting, make sure that the network cable is inserted in place, you will hear a "click" lock sound when inserted in place.
3. Please wipe the port with dry pads, dust accumulation would cause connection issues.
4. Reboot your device and ensure you are not connecting to any wireless network.

1. To achieve 1000Mbps, please make sure that all network cables are CAT 6 or above Ethernet cables: secondly, please connect a stable power supply to power the device.
2. The bandwidth provided by your Internet Service Provider will likely determine your ultimate Internetspeed. To achieve 1000Mbps, ensure the bandwidth provided by your ISP meets the requisite standard.

Note: The total bandwidth of 1000Mbps is shared across all output devices connected to the splitter, with a single device able to reach up to 1000Mbps.

Heat produced during high-speed network transmission is normal. The aluminum shell of the splitter aids heat dissipation to protect the internal electronic circuits, which may cause it warm to touch.

1. Plug in the USB-C power supply cable
2. Plug in the HDMI and AUX or Optical cable
3. Power on the connected device

1. Please use it after connecting the power supply cable. (5V 1A)
2. Check whether the correct signal source is selected for the device.

1. Toggle the audio channel switch to switch to other modes. (The 3.5mm interface only supports 2.0 channels, while the optical fiber interface supports 5.1 channels.)
2. Check the connections at each cable end and check whether the cable length meets the requirements. (Please refer to the cable specification diagram on the far right of this section.)
3. If your HDMI output source is a computer: right-click on the lower right corner of the taskbar - Sounds - Playback - Select your audio device - Advanced - In the default format, set to an appropriate audio format. (Only when the optical cable is connected and switched to the 5.1 channel mode, 192kHz, and DTS Audio/Dolby Digital are supported.)

1. Turn off the HDR mode of the output source device.
2. Check or replace the HDMI cable and connect it to another HDMI port of the display device.

1. The table below lists the parameters and supported features of this product. For higher version requirements, please purchase another model
2. Not support ARC

1. Check whether the audio output device is adjusted to play optical, coaxial, and other audio channels with an amplifier.
2. Adjust the audio format based on the audio device, such as the 3.5mm jack only supporting the 2.0CH/Bypass, while optical supports 5.1CH/Bypass.
3. If the TV or speaker does not support the audio format, please change the input source audio format to PCM or LPCM.
4. For 4K resolution, the supported HDMI cable length is up to 1.8 meters (3.3ft) before and after the extractor, totaling 16.8 meters (55.2ft).
5. Please ensure that the Audio Format on the input source device is set to Stereo when using RCA L/R output ports.

Note: To receive audio from both Optical and L/R output ports, the input source device format must be set to PCM/stereo

1. Check the physical connections. Ensure that all fiber optic cables are properly plugged in and that there are no visible signs of damage to the connectors or the splitter itself.
2. Verify that the input optical signal is within the specified range for the splitter.
3. If the problem persists, it may be due to internal issues such as excessive insertion loss or damage to the splitter. In this case, it is recommended to contact the manufacturer or a professional technician for further troubleshooting or replacement.

1. Insertion loss is a common concern when using optical splitters. To minimize it, ensure that the fiber optic cables are of high quality and properly terminated.
2. Use connectors that are clean and free from dust or debris, as contaminants can significantly increase insertion loss.
3. Additionally, avoid excessive bending or kinking of the fibers, as this can cause signal attenuation. Regularly inspect the splitter and cables for any signs of wear or damage.