1. Introduction
Thank you for choosing the Prechen 12.3-inch Portable Touch Screen Monitor. This manual provides essential information for setting up, operating, and maintaining your new display. Designed for versatility, this monitor features a 1920x720 IPS display, HDMI and Type-C connectivity, and supports both touch and non-touch functionalities, making it ideal for various applications from business productivity to entertainment.
2. Safety Information
- Read all instructions carefully before using the device.
- Do not expose the monitor to rain, moisture, or extreme temperatures.
- Avoid placing the monitor near heat sources or in direct sunlight.
- Use only the power adapter and cables provided or recommended by the manufacturer.
- Do not attempt to disassemble or repair the monitor yourself. Refer all servicing to qualified personnel.
- Keep the monitor away from strong magnetic fields.
- Clean the screen with a soft, lint-free cloth. Avoid using harsh chemicals or abrasive cleaners.
3. Package Contents
Please check the package for the following items:
- Prechen 12.3-inch Portable Touch Screen Monitor
- USB-A to USB-C Cable
- HDMI Cable
- USB-C to USB-C Cable
- Monitor Stand
- User Manual (this document)
4. Product Overview
4.1. Dimensions and Design
- Dimensions: Approximately 307mm (Length) x 132mm (Width) x 14-15mm (Thickness)
- Material: Durable metal casing
- VESA Mount: 75x75mm pre-punched holes for wall mounting or compatible VESA arms.
4.2. Ports and Controls
The monitor features the following ports and control buttons, typically located on the side:
- USB-C Ports (x2): For signal, touch functionality, and power transfer.
- HDMI Port: For video signal input.
- 3.5mm Audio Jack: For external audio output.
- OFF/ON Button: To power the monitor on or off.
- Volume - Button: To decrease audio volume.
- Brightness + Button: To increase screen brightness.
- Return Button: To go back in menu navigation.
- Menu Button: To access the On-Screen Display (OSD) menu.
4.3. Built-in Speakers
The monitor includes built-in stereo speakers for an immersive audio experience.
5. Setup Instructions
5.1. Connecting to a Computer/Device
- Power: Ensure the monitor is powered. If using USB-C for power, connect the provided USB-C to USB-C cable to a power source (e.g., a wall adapter or a powered USB-C port on your device).
- USB-C Connection (for signal, touch, and power): If your device has a full-featured USB-C port (supporting DisplayPort Alternate Mode and Power Delivery), connect the monitor using the USB-C to USB-C cable. This single cable can provide video, touch, and power.
- HDMI Connection (for signal, with separate power/touch): If your device does not have a full-featured USB-C port, use the HDMI cable for video signal. For touch functionality and power, you will need to connect a USB-A to USB-C cable from your device's USB-A port to one of the monitor's USB-C ports. Ensure the monitor also receives power via a separate USB-C connection to a power source if your device's USB-A port cannot supply sufficient power.
Note: When connecting devices with higher power requirements (such as gaming devices), the display illumination may blink or not turn on due to insufficient power supply. Before connecting the monitor to these devices, connect the original power adapter to the monitor via the USB-A to USB-C cable to obtain sufficient power.
5.2. Using the Stand or VESA Mount
- Included Stand: Attach the provided stand to the monitor for desktop use.
- VESA Mounting: For a more permanent setup, use the 75x75mm VESA mount holes on the back of the monitor to attach it to a compatible VESA arm or wall mount (sold separately).
6. Operating Instructions
6.1. Power On/Off
Press the OFF/ON button on the side of the monitor to power it on or off.
6.2. On-Screen Display (OSD) Menu
Press the Menu button to access the OSD menu. Use the Volume - and Brightness + buttons to navigate through options and adjust settings. The Return button will take you back to the previous menu or exit the OSD.
6.3. Touch Functionality
When connected via a full-featured USB-C port or HDMI + USB-A to USB-C for touch, the monitor supports 10-point multi-touch. This allows for responsive and seamless interaction with compatible devices.
Note: Touch functionality is not available when the monitor is connected to devices such as Apple devices (Mac systems support single touch only), PS3/4/5, Switch, X-box, Steam-Deck, Fire TV stick/cube, etc.
6.4. Display Modes
The monitor supports various display modes when connected to a compatible device:
- Split-Screen Extension: Extend your desktop across multiple displays.
- Extended Display: Use the monitor as a secondary display to expand your workspace.
- Mirror Mode: Duplicate your primary display onto the monitor.
6.5. Flexible Orientation
The monitor can be used in both landscape and portrait orientations, offering flexibility for different tasks.
- Landscape Mode: Ideal for office work, gaming, and general viewing.
- Portrait Mode: Optimized for reading, coding, document review, and mobile web browsing.
Note: Portrait Mode requires manual adjustment of the display settings on your connected device.
7. Maintenance
- Cleaning the Screen: Gently wipe the screen with a soft, dry, lint-free cloth. For stubborn marks, lightly dampen the cloth with water or a screen-specific cleaning solution (do not spray directly onto the screen).
- Cleaning the Casing: Use a soft, dry cloth to wipe the monitor's casing.
- Storage: When not in use for extended periods, store the monitor in a cool, dry place, protected from dust and direct sunlight.
- Avoid Liquids: Do not spill any liquids on the monitor or its ports.
8. Troubleshooting
8.1. No Signal / Black Screen
- Ensure all cables (HDMI, USB-C) are securely connected to both the monitor and your device.
- Verify that the monitor is receiving power. Check the power indicator light.
- Confirm your device's display output is enabled and configured correctly (e.g., extended or duplicated display settings).
- Try a different cable or port on both the monitor and your device to rule out faulty connections.
- If using HDMI, ensure a separate USB-C cable is providing power to the monitor.
8.2. Touch Functionality Not Working
- Ensure the USB-C cable is properly connected and supports data transfer for touch. If using HDMI, ensure the USB-A to USB-C cable for touch is connected.
- Verify that your connected device supports touch input via the chosen connection method.
- Remember that touch functionality is limited or unavailable for certain devices (e.g., Apple devices support single touch only; no touch for PS3/4/5, Switch, X-box, Steam-Deck, Fire TV stick/cube).
- Restart both the monitor and the connected device.
8.3. Display Illumination Blinks or Does Not Turn On
- This often indicates insufficient power. Ensure the monitor is connected to a stable and sufficient power source.
- If connecting to a high-power device (e.g., gaming console), always connect the monitor's power adapter first via the USB-A to USB-C cable to ensure adequate power supply.
9. Specifications
| Feature | Specification |
|---|---|
| Display Size | 12.3 inches |
| Resolution | 1920x720 |
| Panel Type | IPS |
| Brightness | 500cd/m² |
| Contrast Ratio | 1400:1 |
| Refresh Rate | 60 Hz |
| Response Time | 5ms |
| Viewing Angles | 178° (Vertical/Horizontal) |
| Built-in Speaker | Yes |
| Interface Type | HDMI-Compatible, USB-C |
| Display Ratio | 3:2 |
| Screen Type | WLED |
| Certification | CE, FCC |
| Matrix Color Depth | 8 bit |
| Refresh Rate Sync Technology | AMD FreeSync Pro |
10. User Tips
- MacOS Compatibility: The monitor works with MacOS devices, but touch functionality is limited to single touch only.
- Android Smartphone Connection: You can connect Android smartphones via USB-C for display and touch, provided the phone's USB-C port supports video output (DisplayPort Alt Mode).
- CarPlay Devices: This monitor is designed as a general-purpose external display and is not directly compatible with CarPlay systems as a dedicated CarPlay interface.
- Optimizing Power: For stable performance, especially with power-intensive applications or devices, always ensure the monitor receives adequate power, preferably by connecting its dedicated power cable.
- Productivity Boost: Utilize the monitor in portrait mode for coding, document review, or social media feeds to maximize screen real estate.
11. Warranty and Support
For warranty information and technical support, please refer to the seller's official website or contact their customer service directly. Keep your purchase receipt as proof of purchase for any warranty claims.




