1. Introduction
This manual provides essential information for the proper setup, operation, and maintenance of your UPERFECT 27-inch 4K 144Hz Dual Mode Portable Monitor. Please read this guide thoroughly before using the product to ensure optimal performance and to prevent damage.
2. Product Overview
Package Contents
Verify that all items are present in the box:
- 27-inch Portable Monitor
- User Manual
- PD 65W Power Adapter
- DP Cable
- HDMI to HDMI Cable
- USB-C to USB-C Cable (x2)

Monitor Components and Ports
Familiarize yourself with the monitor's physical features and connection points.

- HDMI Port: Connects to devices via HDMI cable.
- DisplayPort: Connects to devices via DisplayPort cable.
- USB-C 3.1 Port: For power delivery and video signal transmission (single cable solution).
- OTG Port: For connecting USB peripherals like a mouse or keyboard.
- Power Button: Turns the monitor on/off.
- Menu Button: Accesses the On-Screen Display (OSD) menu.
- Brightness Buttons: Adjusts screen brightness.
- Mode Button: Switches between display modes.
- Signal Source Selection Button: Selects the input source (HDMI, DP, USB-C).
- Headphone Port: For audio output to headphones or external speakers.
3. Setup
Connecting the Monitor
The monitor offers versatile connectivity options for various devices.
- Power Connection: Connect the PD 65W Power Adapter to the monitor's USB-C port (if your device cannot provide sufficient power via a single USB-C cable) and plug it into a power outlet.
- Video Connection:
- USB-C: For compatible laptops, tablets, or smartphones, connect a single USB-C to USB-C cable from your device to the monitor's USB-C port for both video and power.
- HDMI: Connect an HDMI cable from your device (e.g., PC, game console) to the monitor's HDMI port.
- DisplayPort: Connect a DisplayPort cable from your device to the monitor's DisplayPort.
- Peripheral Connection (Optional): Use the OTG port to connect a USB mouse or keyboard if needed.

Adjusting the Stand and Mounting
The monitor features an integrated adjustable stand and VESA mounting compatibility.
- Integrated Stand: The monitor includes a built-in stand that allows for 0-180° tilt adjustment to achieve a comfortable viewing angle.
- VESA Mounting: For alternative setups, the monitor is VESA compatible (100x100mm, M4*5mm screw size). This allows for wall mounting or attachment to monitor arms.

4. Operating Instructions
Power On/Off
Press the Power Button to turn the monitor on or off.
Input Source Selection
Use the Signal Source Selection Button to cycle through available input sources (USB-C, HDMI, DisplayPort) until your desired input is displayed.
Dual Mode Switching (4K 144Hz / 1080P 288Hz)
The monitor supports a dual mode feature, allowing you to switch between 4K resolution at 144Hz and 1080P resolution at 288Hz. This can be adjusted via the OSD menu or potentially a dedicated 'Mode' button, depending on the specific firmware version.

On-Screen Display (OSD) Menu
Press the Menu Button to access the OSD menu. Use the navigation buttons (often shared with brightness/mode controls) to browse options and adjust settings such as:
- Brightness/Contrast: Adjust display luminance and contrast levels.
- Color Settings: Modify color temperature, gamma, and color space.
- Picture Mode: Select preset display modes (e.g., Standard, Game, Movie).
- Audio Settings: Control volume for the integrated 3D dual speakers or connected headphones.
- Input Source: Manually select the active input.
- System Settings: Language, OSD timeout, reset to factory defaults.

Eye Protection Feature
The monitor incorporates a rough matte surface to reduce reflected light and a low blue light mode to minimize eye strain during prolonged use. This feature can typically be enabled or adjusted within the OSD menu under 'Picture Mode' or 'Eye Care' settings.

5. Maintenance
Cleaning the Monitor
- Always power off and unplug the monitor before cleaning.
- Use a soft, lint-free cloth lightly dampened with water or a screen-cleaning solution.
- Do not spray cleaners directly onto the screen.
- Avoid using abrasive cloths, alcohol, or ammonia-based cleaners, as these can damage the screen surface.
General Care
- Avoid placing heavy objects on the monitor or its cables.
- Keep the monitor away from direct sunlight, heat sources, and excessive moisture.
- The monitor features an aluminum alloy body for enhanced durability and heat dissipation. Avoid sharp objects that could scratch the surface.

6. Troubleshooting
If you encounter issues with your monitor, refer to the following common problems and solutions:
| Problem | Possible Cause | Solution |
|---|---|---|
| No image on screen / "No Signal" message | Incorrect input source selected; loose or faulty cable; insufficient power. | Ensure the correct input source is selected via the monitor's OSD. Check all cable connections (USB-C, HDMI, DP) are secure. Ensure the monitor is receiving adequate power, especially if using a single USB-C cable. Try connecting the external power adapter. |
| Screen is too dim or too bright | Brightness/contrast settings are incorrect. | Adjust brightness and contrast using the dedicated buttons or through the OSD menu. |
| Image is distorted or flickering | Incorrect resolution or refresh rate; faulty cable; graphics driver issue. | Ensure your device's display settings match the monitor's supported resolutions and refresh rates (e.g., 4K@144Hz or 1080P@288Hz). Try a different cable. Update your device's graphics drivers. |
| No sound from speakers/headphones | Volume too low; incorrect audio output selected on device; faulty cable. | Increase monitor volume via OSD. Ensure your connected device is outputting audio to the monitor. Check headphone connection. |
| Monitor does not turn on | No power; faulty power adapter or cable. | Verify the power adapter is securely connected to both the monitor and a working power outlet. Try a different power outlet. |
7. Specifications
| Feature | Specification |
|---|---|
| Brand | UPERFECT |
| Model | B0G8XLGVRZ |
| Screen Size | 27 Inches |
| Resolution | 4K UHD (3840 x 2160), FHD (1920 x 1080) |
| Max Refresh Rate | 144 Hz (4K), 288 Hz (1080P) |
| Brightness | 600 Nits |
| Contrast Ratio | 2000:1 |
| Aspect Ratio | 16:9 |
| Connectivity Technology | HDMI (x2), USB-C, DisplayPort |
| Special Features | Adaptive Sync (Freesync), Dual Mode, VESA Compatible |
| Product Dimensions | 1.8 x 35 x 60 cm (Depth x Width x Height) |
| Weight | 3.8 kg |
| Country of Origin | China |
8. Warranty and Support
Warranty Information
This UPERFECT monitor comes with a two-year manufacturer's warranty. Please retain your proof of purchase for warranty claims.
Customer Support
For technical assistance, troubleshooting, or warranty inquiries, please contact UPERFECT customer support. UPERFECT offers 24/7 support to assist you with any product-related questions.
You can find more information and contact details on the official UPERFECT brand store: UPERFECT Brand Store
