1. Introduzione
The OREI UHDS-104A is a 1x4 HDMI 2.0 Splitter designed to distribute a single HDMI input signal to four identical HDMI output signals. This device supports resolutions up to 4K x 2K at 60Hz and includes a built-in scaler to match resolutions across different displays. It also features an audio extractor, providing both analog and optical audio outputs. The UHDS-104A is compliant with HDMI 2.0b and HDCP 2.2 standards, ensuring compatibility with a wide range of modern media devices.

Figure 1: OREI UHDS-104A 1x4 HDMI Splitter with Scaler and Audio Extractor.
2. Contenuto della confezione
Verificare che tutti gli articoli siano presenti nel pacco:
- 1 x OREI UHDS-104A 1x4 HDMI 2.0 Splitter
- 1 x DC 5V Power Adapter (100-240V, US Plug)
- 1 x Manuale utente
Nota: i cavi HDMI non sono inclusi e devono essere acquistati separatamente.

Figure 2: Visual representation of the OREI UHDS-104A package contents, including the splitter, power adapter, and user manual.
3. Prodotto finitoview
Pannello frontale
- LED DI ALIMENTAZIONE: Si illumina quando il dispositivo è acceso.
- NEL LED: Illuminates when an active HDMI input signal is detected.
- LED OUT 1-4: Illuminate when an active HDMI output connection is established for each respective port.
- Porta di SERVIZIO: Porta micro USB per aggiornamenti del firmware.
- Interruttore EDID: Allows selection of EDID modes (AUTO, COPY, 5.1CH, 7.1CH) to optimize compatibility between source and displays.
- 4K->1080P Switches (1-4): Individual switches for each output to enable or disable 4K to 1080P downscaling.
Pannello posteriore
- USCITA HDMI 1-4: HDMI 2.0 output ports for connecting to displays.
- USCITA OTTICA: Optical audio output (SPDIF) for connecting to audio receivers or soundbars.
- USCITA SINISTRA/DESTRA: 3.5mm analog stereo audio output for connecting to external amplificatori o altoparlanti.
- INGRESSO HDMI: Porta di ingresso HDMI 2.0 per la connessione al dispositivo sorgente.
- CC 5V: Porta di ingresso alimentazione per l'adattatore di alimentazione CC da 5 V incluso.

Figura 3: pannello frontale view of the OREI UHDS-104A, highlighting LED indicators and control switches.

Figura 4: Pannello posteriore view of the OREI UHDS-104A, showing HDMI input/output, audio outputs, and power input.
4. Istruzioni per l'installazione
Follow these steps to set up your OREI UHDS-104A HDMI Splitter:
- Collegare la sorgente HDMI: Collega il tuo dispositivo sorgente HDMI (ad esempio, lettore Blu-ray, console di gioco, PC) al HDMI IN port on the splitter using a high-quality HDMI cable (recommended 30 feet or shorter).
- Collegare i display HDMI: Connect up to four HDMI displays (e.g., TVs, monitors, projectors) to the USCITA HDMI 1-4 porte sullo splitter utilizzando cavi HDMI di alta qualità.
- Collegamento dell'uscita audio (facoltativo): If you wish to extract audio, connect your audio receiver or soundbar to either the USCITA OTTICA port (for digital audio) or the USCITA L/R port (for analog stereo audio).
- Connetti alimentazione: Collegare l'adattatore di alimentazione CC da 5 V incluso alla CC 5V port on the splitter, then plug the adapter into a power outlet. The POWER LED on the front panel will illuminate.
- Accendi i dispositivi: Power on your HDMI source device and all connected displays.

Figure 5: Diagram illustrating the typical connection setup for the OREI UHDS-104A, showing source, splitter, displays, and audio output.
Video 1: An official OREI video demonstrating the mirroring functionality of the 4K HDMI Splitter, showing one input duplicated across multiple displays.
5. Istruzioni per l'uso
Controllo EDID
The EDID (Extended Display Identification Data) switch on the front panel allows you to manage the communication between the source and displays for optimal compatibility. Adjust the switch based on your setup requirements:
- AUTO: The splitter automatically detects the best EDID settings from the connected displays.
- COPIA: The splitter copies the EDID from Output 1 to all other outputs. This is useful when all displays are identical or when you want to force a specific resolution/audio format.
- 5.1CH / 7.1CH: Forces the audio output to 5.1 channel or 7.1 channel, respectively, for compatible audio systems.
4K to 1080P Downscaling
The UHDS-104A features individual switches for each output (1-4) to enable or disable 4K to 1080P downscaling. This is particularly useful when connecting a 4K source to a mix of 4K and 1080P displays. By enabling downscaling for 1080P displays, you can ensure they receive a compatible signal while 4K displays receive the full 4K resolution.
- SOPRA: Enables 4K to 1080P downscaling for the respective output.
- OFF: Disables 4K to 1080P downscaling for the respective output (passes through original resolution).

Figure 6: Close-up of the front panel showing the EDID control switch and individual 4K to 1080P downscaling switches for each output.
Video 2: An official OREI video providing an overview of the UHDS-104A, highlighting its features including audio extraction and scaling capabilities.
6. Manutenzione
To ensure optimal performance and longevity of your OREI UHDS-104A, follow these maintenance guidelines:
- Keep the device in a cool, dry, and well-ventilated area.
- Avoid exposing the device to direct sunlight, high temperatures, or humidity.
- Pulire il dispositivo con un panno morbido e asciutto. Non utilizzare detergenti liquidi o spray.
- Assicurarsi che tutti i cavi siano collegati saldamente per evitare perdite di segnale o problemi intermittenti.
7. Risoluzione Dei Problemi
If you encounter issues with your OREI UHDS-104A, refer to the following common troubleshooting steps:
- Nessuna immagine/segnale:
- Ensure all HDMI cables are securely connected and are of good quality (recommended 30 feet or shorter).
- Verify that the power adapter is correctly connected and the POWER LED is illuminated.
- Check the EDID switch settings. Try setting it to 'AUTO' or 'COPY' from a working display.
- If using a 4K source with 1080P displays, ensure the 4K->1080P downscaling switch is set to 'ON' for the respective outputs.
- Try connecting the HDMI source directly to a display to confirm the source and display are working correctly.
- Nessun audio:
- Ensure your audio system is correctly connected to either the OPTICAL OUT or L/R OUT ports.
- Check the audio settings on your source device to ensure it's outputting a compatible audio format.
- Adjust the EDID switch to a setting that supports the desired audio channels (e.g., 5.1CH, 7.1CH).
- Problemi di qualità dell'immagine (sfarfallio, distorsione):
- Use high-quality, certified HDMI 2.0 cables.
- Reduce the cable length if possible.
- Ensure the 4K->1080P downscaling is correctly configured for your displays.
8. Specifiche
| Caratteristica | Specificazione |
|---|---|
| Numero di modello | UHDS-104A |
| Dimensioni del prodotto | 7.87 x 2.5 x 0.5 pollici |
| Peso dell'articolo | 12.2 once |
| Colore | Nero |
| Tipo di connettore | Cavo HDMI |
| Tipo di cavo | Ingresso HDMI |
| Dispositivi compatibili | Projector, Roku 4, 4K TV, Amazon Fire TV, Ultra Projector, PS4, Xbox, Apple TV, HDMI LCD, Cable box, Blu-ray player, DVD player, PC, STB |
| Versione HDMI | HDMI 2.0 (also supports 1.4, 1.3, 1.2) |
| Conformità HDCP | Conformità HDCP 2.2 |
| Risoluzione massima | 4K x 2K @60Hz |
| Supporto audio | LPCM, Dolby-AC3, DTS7.1, DSD/Dolby TrueHD/DTS-HD master audio |
| Uscite audio | Optical (SPDIF), L/R Analog (3.5mm) |
9. Garanzia e supporto
The OREI UHDS-104A comes with a 1-Year OREI Warranty E Assistenza a vita. For technical assistance, troubleshooting, or warranty claims, please contact OREI customer support through their official channels.





