Introduction
Thank you for purchasing the UPERFECT 21.5-inch 120Hz Portable Gaming Monitor. This manual provides essential information for setting up, operating, and maintaining your monitor. Please read it thoroughly before use to ensure optimal performance and safety.
Safety Information
- Ensure the monitor is placed on a stable, flat surface to prevent accidental falls.
- Avoid exposing the monitor to extreme temperatures, humidity, or direct sunlight.
- Do not block ventilation openings.
- Use only the provided power adapter and cables to prevent damage and ensure stable operation.
- Keep liquids away from the monitor. In case of spills, disconnect power immediately.
- For optimal viewing comfort and safety, position the monitor at eye level or slightly below. Avoid positioning it at an upward angle, especially for larger monitors, as this can strain the stand and potentially cause instability.

Image: Correct and incorrect monitor viewing angles. The correct posture shows the user looking slightly down at the screen, while the incorrect posture shows the user looking up, which can cause the monitor to tip.
Package Contents
Please check the package for the following items:
- UPERFECT 21.5-inch Portable Monitor (M215E01)
- Power Adapter (100-240V compatible)
- HDMI Cable
- USB Type-C to Type-C Cable (Full-function)
- USB Type-A to Type-C Cable (for power/OTG)
- User Manual
Product Overview
Ports and Buttons

Image: Side view of the monitor highlighting the various ports and control buttons.
- HDMI Port: Connects to devices via HDMI cable for video and audio transmission.
- Full-function Type-C Ports (x2): Supports video, audio, data transmission, and power delivery via a single Type-C cable. Ensure your device supports DP Alt Mode for video output.
- 3.5mm Earphone Jack: For connecting headphones or external speakers.
- OTG Port (Micro USB): Connects peripherals like a mouse or keyboard.
- Power Button: Turns the monitor on/off.
- Menu/Adjustment Button: Navigates the On-Screen Display (OSD) menu and adjusts settings.
Integrated Stand and VESA Mount
The monitor features an integrated aluminum alloy stand that allows for stepless angle adjustment from 0° (flat) to 180° (vertical). This provides flexibility for various uses, such as a sub-display for a laptop or for viewing recipes. The base includes anti-slip rubber for stability on different surfaces.

Image: The monitor's narrow bezels and the flexible 0-180 degree adjustable integrated stand.
For alternative mounting options, the monitor is VESA compatible (M4*4mm screws, 75x75mm pattern), allowing it to be attached to monitor arms or wall mounts.

Image: Monitor mounted on a VESA arm, illustrating VESA compatibility with specified dimensions.
Setup Instructions
Power Connection
- Connect the provided power adapter to the monitor's power input port.
- Plug the power adapter into a wall outlet.
- For stable voltage and optimal display performance (contrast, brightness, volume), always use the included cables and power adapter.
Connecting to Devices
The monitor supports various devices including laptops, desktops, smartphones, PS3/PS4/PS5, Xbox One, and Nintendo Switch.

Image: Connecting a laptop to the monitor using a single Type-C cable. Note the important warnings regarding DP Alt Mode and power-only Type-C ports.
- Using HDMI: Connect one end of the HDMI cable to your device's HDMI output and the other end to the monitor's HDMI input.
- Using Type-C (Full-function): Connect one end of the full-function Type-C cable to your device's Type-C port (which must support DP Alt Mode) and the other end to one of the monitor's full-function Type-C ports. This single cable can transmit video, audio, and power.
- Important Note for Type-C: If your device's Type-C port does not support DP Alt Mode, you will not be able to transmit video via Type-C. Refer to your device's specifications for compatibility. One of the monitor's Type-C ports is for power input only and does not support video transmission.
Operating Instructions
Turning On/Off
Press the Power Button located on the side of the monitor to turn it on or off.
On-Screen Display (OSD) Menu
Use the Menu/Adjustment Button to access and navigate the OSD menu. Here you can adjust various settings such as brightness, contrast, color modes, and audio volume.
Display Modes
The monitor supports multiple display modes to suit different usage scenarios:
- Extend Mode: Extends your PC's desktop across both screens, providing more workspace.
- Duplicate Mode: Mirrors your PC's display on the portable monitor.
- Portrait Mode: Allows for vertical display, ideal for reading long documents, coding, or browsing social media feeds. This setting is typically configured on your PC.

Image: Monitor displaying content in both horizontal and vertical (portrait) orientations.
Audio Output
The monitor has built-in speakers for audio output. You can also connect headphones or external speakers via the 3.5mm earphone jack.
Maintenance
- Cleaning the Screen: Gently wipe the screen with a soft, lint-free cloth. For stubborn marks, dampen the cloth slightly with water or a screen-cleaning solution. Do not spray liquid directly onto the screen.
- Cleaning the Casing: Use a soft, dry cloth to clean the monitor casing. Avoid abrasive cleaners or solvents.
- Storage: When not in use for extended periods, store the monitor in a cool, dry place, away from direct sunlight and dust.
- Cable Management: Ensure cables are not kinked or strained to prevent damage.
Troubleshooting
| Problem | Possible Cause | Solution |
|---|---|---|
| No display/Black screen |
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| Flickering or unstable display |
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| No sound from speakers/earphone jack |
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| Coil whine or abnormal noise from AC adapter |
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Specifications
| Feature | Detail |
|---|---|
| Brand | UPERFECT |
| Model Number | M215E01 |
| Screen Size | 21.5 inches |
| Resolution | 1920 x 1080 (FHD) |
| Refresh Rate | 120Hz |
| Response Time | 1ms |
| Panel Type | IPS |
| Color Gamut | 100% sRGB (120% sRGB coverage) |
| Aspect Ratio | 16:9 |
| Contrast Ratio | 1300:1 |
| Viewing Angle | 178° |
| Features | HDR Mode, Blue Light Filter, Built-in Speakers, Narrow Bezels, Integrated Adjustable Stand, VESA Mount (75x75mm, M4*4mm) |
| Connectivity | HDMI, 2x Full-function Type-C, 3.5mm Audio Jack, OTG (Micro USB) |
| Power Consumption | 12W (average) |
| Power Input | 100-240V (via adapter) |
| Weight | 2 kg |
Warranty and Support
UPERFECT provides a 1-year manufacturer's warranty for this product. For any inquiries, technical assistance, or warranty claims, please contact UPERFECT customer support.
Contact information can typically be found on the UPERFECT official website or through your purchase platform.