1. Introducció
This manual provides detailed instructions for the installation, operation, and troubleshooting of your ROFAVEZCO HDMI Matrix ARC 4 In 2 Out Switch. This device allows you to connect up to four HDMI source devices and distribute their signals to two HDMI displays, with advanced features such as Audio Return Channel (ARC), Consumer Electronics Control (CEC), EDID management, 4K to 1080P down-scaling, and audio extraction.
2. Informació de seguretat
- Assegureu-vos una ventilació adequada al voltant del dispositiu.
- No exposeu el dispositiu a l'aigua ni a una humitat excessiva.
- Utilitzeu només l'adaptador d'alimentació subministrat.
- Eviteu col·locar objectes pesats al dispositiu.
- Mantingueu el dispositiu allunyat de les fonts de calor.
3. Contingut del paquet

Image: Contents of the product box, including the HDMI matrix switch, power adapter, remote control, IR extension cable, user manual, and mounting brackets.
Verifiqueu que tots els elements siguin presents al paquet:
- ROFAVEZCO HDMI Matrix ARC 4 In 2 Out Switch (EZ-MX42HAS-ARC)
- Adaptador d'alimentació
- Comandament a distància IR
- Cable d'extensió IR
- Manual d'usuari
- Suports de muntatge (2 unitats)
- Cargols (4 unitats)
4. Producte acabatview
The ROFAVEZCO HDMI Matrix Switch features multiple input and output ports, along with control buttons and indicators. Familiarize yourself with the layout for proper connection and operation.

Image: Top and front view of the ROFAVEZCO HDMI Matrix Switch, showing input/output ports, control buttons, and indicators.
Panell frontal:
- Optical Out Select Switch: Toggles between CEC, Strip from HDMI OUT1, and ARC audio output modes for the optical port.
- Port d'infrarojos: Connects the IR extension cable for remote control.
- HDMI Output 1/2 Select Buttons: Buttons to switch the active input for HDMI Output 1 and HDMI Output 2.
- Indicadors LED: Show active input for each output.
Panell posterior:

Imatge: Part posterior view of the ROFAVEZCO HDMI Matrix Switch, detailing the SPDIF/Optical Out, HDMI OUT1, L/R OUT, HDMI OUT2, HDMI IN1-IN4, DC/5V power input, EDID switch, Scaler DIP switches, and UPDATE port.
- SPDIF/Optical Out: Digital audio output (5.1CH).
- SORTIDA HDMI 1: HDMI output port 1, supports ARC and CEC.
- SORTIDA L/R: Stereo 3.5mm audio output (2.1CH).
- SORTIDA HDMI 2: HDMI output port 2.
- HDMI IN1-IN4: HDMI input ports for source devices.
- DC/5V: Port d'entrada d'alimentació.
- Interruptor EDID: Toggle switch for EDID modes (4K7.1, 4K5.1, COPY).
- Scaler Switch: DIP switches for 4K to 1080P down-scaling for OUT1 and OUT2.
- UPDATE Port: Per a actualitzacions de firmware.
5. Configuració i connexió
Follow these steps to connect your HDMI Matrix Switch to your source devices and displays.

Image: Connection diagram illustrating how to connect various HDMI source devices (e.g., PS5, Xbox) to the matrix inputs and two displays (TVs) to the outputs, along with audio systems.
- Apagueu els dispositius: Ensure all HDMI source devices, displays, and the matrix switch are powered off before making connections.
- Connectar fonts HDMI: Connect your HDMI source devices (e.g., Blu-ray player, game console, streaming box) to the HDMI IN1-IN4 ports on the matrix switch using high-quality HDMI 2.0 cables (AWG26, less than 3 meters recommended).
- Connecteu pantalles HDMI: Connect your HDMI displays (TVs, projectors) to the HDMI OUT1 and HDMI OUT2 ports on the matrix switch.
- Connecteu dispositius d'àudio (opcional):
- Per a l'àudio digital, connecteu un cable òptic des del SPDIF/Optical Out port to your soundbar or AV receiver.
- For stereo audio, connect a 3.5mm audio cable from the L/R SORTIDA port to your headphones or stereo system.
- Connect IR Extension Cable: If using the IR remote control from a distance or if the device is out of line-of-sight, connect the IR extension cable to the Port IR al panell frontal.
- Encès: Connecteu l'adaptador de corrent proporcionat a DC/5V port on the matrix switch, then plug it into a power outlet. Power on your displays and source devices.
Important: Use new HDMI 2.0 AWG26 cables less than 3 meters for optimal performance, especially with 4K 60Hz signals.
6. Instruccions de funcionament
This section details how to use the various features of your HDMI Matrix Switch.
6.1 Input/Output Switching

Image: Illustration of different methods to control the HDMI Matrix Switch, including the IR remote, front panel buttons, and an update port.
You can switch inputs for each output independently using the front panel buttons or the IR remote control.
- Botons del tauler frontal: Press the "HDMI OUTPUT1" or "HDMI OUTPUT2" buttons repeatedly to cycle through the connected HDMI inputs (1-4) for the respective output.
- Control remot IR: Use the numbered buttons (1-4) under "HDMI OUTPUT1" or "HDMI OUTPUT2" on the remote to directly select the desired input for each output.
6.2 Gestió EDID

Imatge: Una imatge detallada view of the EDID switch, showing options for 4K7.1, 4K5.1, and COPY modes.
The EDID (Extended Display Identification Data) switch on the rear panel allows you to manage how the source devices detect the display capabilities. This is crucial for ensuring compatibility and optimal audio/video formats.
- 4K7.1: Forces the EDID to report support for 4K resolution with 7.1 channel audio (e.g., Dolby Atmos, DTS:X).
- 4K5.1: Forces the EDID to report support for 4K resolution with 5.1 channel audio.
- CÒPIA: Copies the EDID from HDMI OUT1. This is useful if you want the source to detect the exact capabilities of your primary display.
Nota: Change EDID settings while the device is powered on, then restart source devices for changes to take effect.
6.3 4K to 1080P Down-Scaling

Imatge: Una imatge detallada view of the Scaler DIP switches, labeled 1 and 2, for controlling 4K to 1080P down-scaling for each output.
The matrix switch can down-scale a 4K source signal to 1080P for displays that do not support 4K resolution. This allows 4K and 1080P TVs to work simultaneously.
- Use the DIP switches labeled "SCALER" on the rear panel.
- Switch 1 controls down-scaling for HDMI OUT1.
- Switch 2 controls down-scaling for HDMI OUT2.
- Set the switch to "ON" (1080P) to enable down-scaling for the respective output. Set to "OFF" (PASS) to pass the original 4K signal.
Nota: Down-scaling applies only to 4K to 1080P. It does not down-scale 4K HDR Dolby Vision (4K60Hz 4:2:2) or VRR signals.
6.4 Audio Return Channel (ARC) and Consumer Electronics Control (CEC)

Image: Two diagrams showing how CEC and ARC function with the HDMI Matrix Switch. The top diagram shows CEC enabling audio output to headphones or speakers from HDMI OUT1. The bottom diagram shows ARC allowing audio from the TV connected to HDMI OUT1 to be sent back to the SPDIF output.
HDMI OUT1 supports ARC and CEC functionalities. These features are mutually exclusive; only one can be active at a time.
- ARC (canal de retorn d'àudio): Allows audio from the TV connected to HDMI OUT1 to be sent back to the matrix switch's SPDIF output. This is useful for playing TV's internal apps audio through an external sound system. Select "ARC" using the "Optical Out Select" switch.
- CEC (Consumer Electronics Control): Enables control of connected devices through a single remote. When "CEC" is selected via the "Optical Out Select" switch, audio from HDMI OUT1 can be stripped and sent to the L/R 3.5mm output.
Nota: ARC is supported via the SPDIF port. This device is not compatible with Sonos ARC. Ensure your TV and connected audio devices also support ARC/CEC for these features to function.
6.5 Extracció d'àudio

Image: Diagram illustrating the different audio output formats: 2.1CH via HDMI, L/R OUT, SPDIF OUT; 5.1CH via HDMI, SPDIF OUT, ARC; and 7.1CH via HDMI Amplifier Dolby Atmos Soundbar. It notes that two different channels cannot be output simultaneously.
The matrix switch can extract audio from the HDMI signal and output it through dedicated audio ports.
- SPDIF/Optical Out: Provides 5.1CH digital audio, following the audio from HDMI OUT1.
- L/R OUT (3.5mm): Provides 2.1CH stereo audio, suitable for headphones or stereo speakers.
Nota: The device does not support simultaneous output of ATMOS 7.1 and 5.1 audio. It is not an audio down-mixer.
7. Especificacions
| Característica | Descripció |
|---|---|
| Número de model | EZ-MX42HAS-ARC |
| Compatibilitat amb HDMI | HDMI 2.0, HDCP 2.2 |
| Resolució de vídeo | Up to 4K@60Hz YUV 4:4:4 18Gbps 8bit HDR Dolby Vision, 1080p@144Hz/120Hz/60Hz 3D, 3840x2160@60Hz, 3440x1440@60Hz, 1440p@120Hz/60Hz |
| Formats d'àudio | HDMI: Digital 7.1CH, Dolby Atmos, DTS:X. SPDIF: Optical 5.1CH. L/R: Stereo 2.1CH. |
| Reducció d'escala | 4K to 1080P (for OUT1 and OUT2, separately or together) |
| ARC/CEC Support | Yes, on HDMI OUT1 (alternative modes) |
| Modes EDID | 4K7.1, 4K5.1, COPY |
| Canvi d'entrada | Front panel buttons, IR remote control |
| Dimensions | 7.3 x 5.3 x 3.3 polzades |
| Pes | 1.25 lliures |
| Font d'alimentació | 5V CC (adaptador inclòs) |
| Cable recomanat | HDMI 2.0 AWG26 cable less than 3 meters |
8. Solució De Problemes
Si teniu problemes, consulteu els següents problemes i solucions habituals:
- Sense sortida de vídeo/àudio:
- Ensure all HDMI cables are securely connected and are HDMI 2.0 compliant (AWG26, less than 3m).
- Verify the power adapter is connected and the unit is powered on.
- Check if the correct input is selected for the active output on the matrix switch.
- Try bypassing the matrix switch to confirm source and display functionality.
- Adjust EDID settings (e.g., try "COPY" mode).
- Senyal intermitent o parpellejant:
- Use shorter, higher-quality HDMI 2.0 cables.
- Ensure all devices support the selected resolution and refresh rate.
- Comproveu si hi ha interferències d'altres dispositius electrònics.
- ARC/CEC Not Working:
- Confirm that your TV and audio system support ARC/CEC and that these features are enabled in their settings.
- Ensure "ARC" or "CEC" is selected correctly via the "Optical Out Select" switch on the matrix.
- Note that ARC and CEC are alternative functions on this device.
- No Audio from SPDIF/L/R Out:
- Verify the audio output selection on the matrix switch (Optical Out Select).
- Ensure the source device is outputting an audio format compatible with the selected output (e.g., 5.1CH for SPDIF).
- Check the audio settings on your source device and connected audio system.
- El control remot no respon:
- Remove the battery shield from the remote.
- Substituïu la bateria si cal.
- Ensure the IR extension cable is properly connected and positioned towards the remote.
- Assegureu-vos que no hi hagi obstacles entre el comandament a distància i el receptor d'infrarojos.
9. Manteniment
- Netegeu el dispositiu amb un drap suau i sec. No utilitzeu netejadors líquids.
- Mantingueu el dispositiu lliure de pols i deixalles per garantir una ventilació adequada.
- Guardeu el dispositiu en un lloc fresc i sec quan no el feu servir durant períodes prolongats.
10. Garantia i Suport
For warranty information and technical support, please contact the manufacturer, EZCOOTECH, or your retailer. Refer to your purchase documentation for specific warranty terms and contact details.
Manufacturer: EZCOOTECH
Per obtenir més ajuda, visiteu el EZCOOTECH Brand Store.





