Introduction
Thank you for choosing the UPERFECT 23.8-inch Portable Monitor. This manual provides essential information for setting up, operating, and maintaining your new monitor. Please read it thoroughly before use to ensure optimal performance and longevity of the product.

Image: The UPERFECT 23.8-inch Portable Monitor, highlighting its 120Hz refresh rate, 1080P resolution, 120% sRGB color gamut, and VESA mounting capability.
Key Features
Display Quality
- 23.8-inch 1080P IPS Panel: Provides crisp, clear visuals with vibrant colors.
- 120Hz Refresh Rate & 1.5ms Response Time: Ensures smooth motion and reduced blur, ideal for gaming and fast-paced content.
- 120% sRGB Wide Color Gamut: Delivers accurate and rich color reproduction, covering 10.7 billion colors.
- Anti-Glare Surface: Minimizes reflections, reducing eye strain during extended use.
- 178° Wide Viewing Angle: Maintains consistent image quality from various perspectives.

Image: High-speed visuals demonstrating the 120Hz refresh rate.

Image: Visual representation of the monitor's 120% sRGB wide color gamut.
Design and Ergonomics
- Slim Design with 4mm Bezels: Achieves a 95% screen-to-body ratio for an immersive, nearly frameless viewing experience.
- Integrated Aluminum Alloy Stand: Durable and lightweight, allowing for 0° to 180° angle adjustment and stable use in both horizontal and vertical orientations.
- VESA 75mm Compatible: Supports standard 75x75mm VESA mounts (M4x4mm screws) for flexible setup with monitor arms.

Image: Demonstrates the monitor's narrow bezels and flexible 0-180 degree stand adjustment, including portrait display.

Image: The monitor's VESA compatibility, shown mounted on a monitor arm.
Connectivity
- 2x Full-featured USB Type-C ports: For video, audio, and power delivery with compatible devices.
- 1x Mini HDMI port: For video and audio input from various devices.
- 1x 3.5mm Audio Jack: For connecting external headphones or speakers.
- 1x Micro USB OTG port: For connecting peripherals like a mouse or keyboard.
- Built-in Speakers: Provides integrated audio output.

Image: Detailed view of the monitor's various ports and control buttons.
Setup Guide
Package Contents
Please check the package contents to ensure all items are present:
- UPERFECT 23.8-inch Portable Monitor
- Power Adapter
- USB Type-C to Type-C Cable
- Mini HDMI to HDMI Cable
- USB-A to Type-C Cable (for power)
- User Manual (Japanese version included)
Initial Connection
Follow these steps to connect your monitor:
- Power Connection: Connect the included power adapter to the monitor's power input port and then to a power outlet. This ensures stable voltage and optimal display performance.
- Device Connection (Video & Audio):
- For USB Type-C: Use the full-featured USB Type-C cable to connect the monitor to your device (laptop, smartphone, etc.). Ensure your device's Type-C port supports DP ALT MODE for video output. If not, the Type-C connection may only provide power.
- For Mini HDMI: Use the Mini HDMI to HDMI cable to connect the monitor to your device.
- Peripheral Connection (Optional): Use the Micro USB OTG port to connect a mouse or keyboard if desired.

Image: The portable monitor connected to a laptop, demonstrating its use as an extended display for enhanced productivity.
Operating Instructions
Power On/Off
To power on the monitor, ensure it is connected to a power source. The monitor will typically power on automatically when a signal is detected. To power off, disconnect the power source or use the device's power management settings.
OSD Menu Navigation
The On-Screen Display (OSD) menu allows you to adjust various monitor settings. The control buttons are located on the side of the monitor (refer to the Connectivity image in Key Features).
- Menu Button: Press to access the OSD menu.
- Plus (+) / Minus (-) Buttons: Use these buttons to navigate through menu options and adjust values.
- Back Button: Press to exit a sub-menu or the OSD menu.
Display Modes
The monitor supports various display modes depending on your connected device's capabilities:
- Extended Mode: Extends your desktop across both screens, providing more workspace.
- Duplicate Mode: Duplicates your primary screen's content onto the portable monitor.
- Portrait Mode: Allows for vertical display, ideal for document viewing or coding. (Settings for portrait mode are typically configured on your PC.)
Audio Output
- Built-in Speakers: The monitor has integrated speakers for audio playback.
- 3.5mm Headphone Jack: Connect external headphones or speakers for private listening or higher quality audio. Caution: When inserting or removing headphones, apply gentle force to avoid damaging the port and extend product lifespan.
Maintenance
Proper maintenance ensures the longevity and optimal performance of your UPERFECT portable monitor.
- Cleaning the Screen: Use a soft, lint-free cloth slightly dampened with water or a screen-cleaning solution. Avoid using harsh chemicals or abrasive materials.
- Cleaning the Casing: Wipe the monitor's casing with a soft, dry cloth.
- Storage: When not in use, store the monitor in a cool, dry place, away from direct sunlight and extreme temperatures. If transporting, use appropriate protective packaging.
- General Care: Avoid placing heavy objects on the monitor. Do not expose it to excessive moisture or dust.
Troubleshooting
If you encounter any issues with your monitor, please refer to the table below for common problems and their solutions. If the problem persists, contact customer support.
| Problem | Possible Cause | Solution |
|---|---|---|
| No Signal / Black Screen | Incorrect cable connection; Device's Type-C port does not support DP ALT MODE; Insufficient power. | Ensure cables are securely connected. Verify your device's Type-C port supports DP ALT MODE, or use an HDMI connection. Always connect the included power adapter for stable power. |
| No Audio | Monitor volume is too low; External headphones not properly connected; Audio output settings on device. | Adjust the monitor's volume via the OSD menu. Check headphone connection. Verify audio output settings on your connected device. |
| Flickering / Poor Image Quality | Insufficient power supply; Faulty cable; Incorrect display settings. | Ensure the included power adapter is connected. Try a different cable. Adjust brightness, contrast, and color settings in the OSD menu or on your device. |
| Monitor Not Stable | Integrated stand not properly adjusted or on an uneven surface. | Adjust the integrated stand to a stable angle (0°-180°). Ensure the monitor is placed on a flat, stable surface, utilizing the non-slip rubber feet. |
Specifications
Detailed technical specifications for your UPERFECT portable monitor:
| Feature | Detail |
|---|---|
| Brand | UPERFECT |
| Model Number | M238T01-S |
| Screen Size | 23.8 inches |
| Resolution | 1920 x 1080 (FHD 1080p) |
| Refresh Rate | 120Hz |
| Aspect Ratio | 16:9 |
| Panel Type | IPS |
| Surface Treatment | Anti-Glare |
| Color Gamut | 120% sRGB |
| Viewing Angle | 178° |
| Product Dimensions (L x W x H) | 0.7 x 54.5 x 32.7 cm |
| Product Weight | 3.18 kg |
| VESA Compatibility | 75x75 mm (M4x4mm screws) |
| Connectivity Ports | 1x Mini HDMI, 2x Full-featured Type-C, 1x 3.5mm Audio, 1x Micro USB OTG |
| Built-in Speakers | Yes |
Warranty and Support
UPERFECT is committed to providing high-quality products and excellent customer service.
Warranty: This product comes with a warranty of up to 2 years from the date of purchase, covering manufacturing defects. Please retain your proof of purchase for warranty claims.
Customer Support: If you encounter any problems during use or have questions about your monitor, please do not hesitate to contact UPERFECT customer support. Refer to the contact information provided in your product packaging or visit the official UPERFECT brand store on Amazon for assistance: UPERFECT Brand Store.





