1. Introduction
Welcome to the user manual for your TANXJIA 15.6" 4K OLED Touchscreen Portable Monitor. This document provides essential information for setting up, operating, maintaining, and troubleshooting your device. Please read this manual thoroughly to ensure optimal performance and longevity of your monitor.
The TANXJIA HX156UT is a high-performance portable display featuring a 15.6-inch 4K OLED touchscreen, designed to enhance your visual and productivity experience across various devices.
2. Product Overview
The TANXJIA 15.6" 4K OLED Touchscreen Portable Monitor offers a premium visual experience with its advanced display technology and versatile features.
Key Features:
- Ultra-Clear Visuals: Equipped with a 15.6" OLED panel with a resolution of 3840x2160, delivering sharp images and vibrant colors.
- Precise Color Accuracy: Professional-grade color accuracy with 100% AdobeRGB and ΔE<2 for precise color reproduction, ideal for graphic design and video editing. Features 10-bit color depth.
- Fast Response Time: 1ms ultra-fast response time reduces motion blur, suitable for gaming and video editing.
- Eye-Care Technology: Features blue light filtering and flicker-free display technology for comfortable prolonged use.
- Touchscreen Functionality: 10-point touch screen with an exclusive Touch OSD Menu for direct on-screen adjustments.
- Versatile Connectivity: Dual Type-C full-function interfaces and HDMI for wide compatibility.
What's in the Box:
- TANXJIA 15.6" 4K OLED Touchscreen Portable Monitor
- Metal Rotating Stand
- Foldable Smart Cover
- Stylus
- Necessary connection cables (e.g., USB-C to USB-C, HDMI to Mini-HDMI, Power Adapter)



3. Setup
3.1 Unpacking and Initial Inspection
Carefully remove all components from the packaging. Inspect the monitor and accessories for any signs of damage. If any items are damaged or missing, contact customer support.
3.2 Stand Setup
The monitor comes with a Metal Rotating Stand and a Foldable Smart Cover, both designed to provide stable support.
- Metal Rotating Stand: Unfold the metal stand and place your monitor securely on it. The stand allows for 360-degree rotation and height adjustment for optimal viewing angles.
- Foldable Smart Cover: The smart cover can be folded into various positions to act as a stand, offering portability and protection. Ensure the monitor is securely seated in the cover's grooves when used as a stand.


3.3 Connecting to Devices
The monitor supports various connections for broad compatibility.
- USB-C Connection (Full-Featured): For devices with a full-featured USB-C port (supporting video, audio, and power delivery), connect a single USB-C to USB-C cable from your device to one of the monitor's USB-C ports. This provides both display and power.
- HDMI Connection: For devices with an HDMI output, connect an HDMI to Mini-HDMI cable from your device to the monitor's Mini-HDMI port. You will also need to connect a USB-C to USB-A cable (or power adapter) to one of the monitor's USB-C ports for power.
- Power Supply: If your device's USB-C port does not provide sufficient power, or if using HDMI, connect the monitor to an external 5V power adapter via one of its USB-C ports.


This video demonstrates the setup and various uses of the 15.6" 4K OLED touchscreen portable monitor, including its rich interfaces and one-cable Type-C connection for dual monitors and entertainment.
4. Operating Instructions
4.1 Power On/Off
To power on the monitor, ensure it is connected to a power source and a compatible device. The monitor should automatically power on. To power off, disconnect the power source or use the device's display settings to turn off the external display.
4.2 Touchscreen Functionality
The monitor features a responsive 10-point multi-touch screen. You can interact with your connected device's interface directly on the monitor, similar to a tablet. Gestures such as tapping, swiping, pinching, and zooming are supported.
4.3 Touch OSD Menu
The monitor features an intuitive On-Screen Display (OSD) menu that can be accessed and navigated directly via touch. This eliminates the need for physical buttons for most adjustments.
Accessing the OSD Menu:
Specific gesture to access the OSD menu is typically a swipe from the edge or a specific tap pattern. Refer to the on-screen prompts or experiment with common touch gestures (e.g., a two-finger swipe down from the top edge) to reveal the menu.


OSD Menu Options:
The OSD menu provides controls for various display settings:
- Brightness/Contrast: Adjust the display's luminance and contrast levels.
- Volume: Control the audio output volume.
- Color Settings: Adjust color temperature (e.g., 6500K, 9300K, User Defined), hue, and saturation.
- Display Modes: Select from various preset display modes (e.g., Standard, Game, Movie, Text).
- HDR: Enable or disable High Dynamic Range.
- Color Gamut: Select color space options such as sRGB, Native, DCI-P3, or AdobeRGB.
- Language: Change the OSD menu language.
- FreeSync: Enable or disable FreeSync for smoother gaming (if supported by your device).



4.4 Stylus Usage
The included stylus can be used for precise input on the touchscreen, ideal for drawing, note-taking, or navigating detailed interfaces. Simply use the stylus as you would a pen on paper.
5. Maintenance
5.1 Cleaning the Screen
To clean the screen, gently wipe it with a soft, lint-free cloth. For stubborn smudges, slightly dampen the cloth with water or a screen-safe cleaning solution. Avoid using harsh chemicals, abrasive materials, or excessive moisture.
5.2 General Care
- Avoid placing heavy objects on the monitor.
- Keep the monitor away from direct sunlight, extreme temperatures, and high humidity.
- Use the smart cover for protection when transporting the monitor.
- Do not attempt to disassemble the monitor, as this will void the warranty.
6. Troubleshooting
If you encounter issues with your monitor, please refer to the following common troubleshooting steps:
6.1 No Display / No Signal
- Check Cables: Ensure all cables (USB-C, HDMI, power) are securely connected to both the monitor and your device.
- Power Source: Verify the monitor is receiving adequate power. If using HDMI, ensure a separate power source is connected to the monitor.
- Device Output: Confirm your connected device is configured to output video to an external display. Try restarting your device.
- Input Source: If available, check the OSD menu to ensure the correct input source (e.g., USB-C, HDMI) is selected.
6.2 Touchscreen Not Responding
- USB-C Connection: Ensure you are using a full-featured USB-C cable that supports data transfer for touch functionality.
- Driver Installation: For some operating systems, a touch driver might be required. Check your device's settings or the manufacturer's website for driver information.
- Restart: Disconnect and reconnect the monitor, or restart your connected device.
6.3 Image Quality Issues
- Resolution: Ensure your device's display settings are configured to the monitor's native 4K (3840x2160) resolution.
- OSD Settings: Adjust brightness, contrast, and color settings via the OSD menu.
- Cable Quality: Use high-quality cables to ensure optimal signal transmission.
6.4 Power Issues
- Power Adapter: Ensure the power adapter (if used) is correctly connected and functioning.
- USB-C Power Delivery: If powering via USB-C, confirm your device's USB-C port supports power delivery to external displays.
7. Specifications
The following table outlines the technical specifications of the TANXJIA 15.6" 4K OLED Touchscreen Portable Monitor (Model: HX156UT).

| Feature | Specification |
|---|---|
| Model Number | HX156UT |
| Screen Size | 15.6 Inches |
| Panel Type | OLED |
| Resolution | 4K UHD (3840 x 2160 Pixels) |
| Aspect Ratio | 16:9 |
| Response Time | 1ms |
| Color Accuracy | 100% AdobeRGB, ΔE<2, 10-Bit Color Depth |
| Brightness | 400 Candela |
| Touchscreen | 10-Point Multi-Touch |
| Screen Surface | Glossy |
| Connectivity | 2x USB-C (Full-Featured), 1x Mini-HDMI |
| Power Input | 5 Volts |
| Product Dimensions | 0.43 x 14.37 x 8.86 inches |
| Item Weight | 9.88 pounds (Note: This may include packaging weight) |
8. Warranty and Support
8.1 Warranty Information
This product is covered by Amazon’s standard return and replacement policy. If you receive a defective item, you can request a return or replacement according to Amazon’s policy. Please refer to your purchase documentation or Amazon's website for specific details regarding warranty periods and conditions.
8.2 Customer Support
For technical assistance, troubleshooting beyond this manual, or warranty claims, please contact the seller or Amazon customer service. Have your product model number (HX156UT) and purchase details ready when contacting support.