1. Introduction
Thank you for choosing the MeLE Quieter3C Fanless Mini PC. This compact, reliable, and powerful mini PC is designed for various applications including industrial, home, and office use. This manual provides essential information for setting up, operating, maintaining, and troubleshooting your device to ensure optimal performance and longevity.
For additional support and resources, please visit the official MeLE website: www.mele.cn/support.
2. Important Safety Information
2.1 Button Battery Warning
INGESTION HAZARD: This product contains a button cell or coin battery. DEATH or serious injury can occur if ingested.
A swallowed button cell or coin battery can cause Internal Chemical Burns in as little as 2 hours. Even used batteries may cause severe injury or death.
KEEP new and used batteries OUT OF REACH of CHILDREN.
Seek immediate medical attention if a battery is suspected to be swallowed or inserted inside any part of the body.
This product contains a non-rechargeable battery (CR2032 or CR1632 coin battery); the nominal battery voltage is 3V.
- Remove and immediately recycle or dispose of used batteries according to local regulations and keep away from children. Do NOT dispose of batteries in household trash or incinerate.
- Non-rechargeable batteries are not to be recharged.
- Do not force discharge, recharge, disassemble, heat above 60°C or incinerate. Doing so may result in injury due to venting, leakage or explosion resulting in chemical burns.
- Ensure the batteries are installed correctly according to polarity (+ and -).
- Do not mix old and new batteries, different brands or types of batteries, such as alkaline, carbon-zinc, or rechargeable batteries.
- Remove and immediately recycle or dispose of batteries from equipment not used for an extended period of time according to local regulations.
- Always completely secure the battery compartment. If the battery compartment does not close securely, stop using the product, remove the batteries, and keep them away from children.
2.2 General Safety Guidelines
- Use only the original power adapter provided by MeLE.
- Do not expose the device to water, moisture, or extreme temperatures.
- Avoid dropping or subjecting the device to strong impacts.
- Do not attempt to open or repair the device yourself. Refer to qualified service personnel.
- Ensure proper ventilation around the device.
3. Package Contents
Please check the box for the following items:
- 1x MeLE Quieter3C Mini PC
- 1x Power Supply with EU/US/UK/AU Type Adapter (Adapters are optional depending on sales regions)
- 1x Silicone cooling pad for SSD heat dissipation
- 1x User Manual (PDF version available online)
- 1x VESA mount
4. Product Overview
The MeLE Quieter3C Mini PC features a compact design with a variety of ports for connectivity. Refer to the diagram below for port identification.

4.1 Port Identification
- Power Button
- Kensington Lock Slot
- USB 3.2 (10Gbps) *1, USB 3.2 (5Gbps) *2
- USB Type-C (supports PD3.0 for Power Input, Data Transfer, DP1.4)
- Micro SD Slot (SD3.0, Up to 100MB/s)
- 3.5mm Audio Jack (Headphone and MIC)
- HDMI 2.0 Output *2 (4K 60Hz)
- Reset (CMOS Reset/BIOS Reset)
- USB Type-C (Power input, supports PD3.0)
- Gigabit Ethernet port
- High thermal conductive engineering plastic
- Antenna for WiFi 5 and BT5.1
**Remark:** Both USB Type-C ports support PD3.0 protocol. The operating voltage range is 12V to 18V. Please select a USB Type-C power adapter that including 12V voltage output and the output power is not less than 24W.
5. Setup Instructions
5.1 Connecting Your Mini PC
Follow these steps to connect your MeLE Quieter3C Mini PC to a display and peripherals:

- Connect the original power adapter from the factory to the Mini PC (using USB Type-C port 9 or 4).
- Connect the Mini PC to a TV or monitor using an HDMI cable (ports 7).
- Connect your keyboard and mouse to the USB ports (3).
- (Optional) Connect an Ethernet cable to the Gigabit Ethernet port (10) for a wired network connection.
- Turn on your Mini PC by pressing the Power Button (1). The work indicator light will turn on when the Mini PC powers on.
- Enjoy your Mini PC!
5.2 VESA Mounting (Optional)
The MeLE Quieter3C can be mounted to the back of a VESA-compatible display using the included VESA mount.

- Attach the VESA-Mounted Bracket to the Mini PC with screws.
- Fix the bracket to the back of your display with screws.
5.3 External Antenna Safety Angle
If your model includes an external antenna, ensure it is rotated within the safe range to prevent damage.

Note: The Quieter3C model features an internal antenna for WiFi 5 and Bluetooth 5.1 (refer to Figure 1, item 12). The external antenna safety angle information is typically relevant for other MeLE models like PCG02 and PCG35.
6. Operating Instructions
6.1 Power On/Off
- To power on: Press the Power Button (1) on the Mini PC.
- To power off: Use the operating system's shutdown function. Alternatively, press and hold the Power Button for a few seconds to force a shutdown (not recommended for regular use).
6.2 BIOS Settings
To access the BIOS settings:
- Press the power button.
- Continuously press F7 or Delete on your keyboard to enter the boot device menu.
- Select "Enter Setup" and press Enter to access the BIOS Setting menu.
6.2.1 Auto Power On
This feature allows the Mini PC to automatically power on when power is supplied.
For Intel Jasper Lake (N5105) processors:
- Enter BIOS Setting menu (as described above).
- Navigate to Advanced > Customer Exclusive Functions > Auto Power On.
- Select Enabled.
- Press F4 to Save & Exit.
6.2.2 Enable PXE Boot
PXE (Preboot Execution Environment) boot allows the Mini PC to boot from a network server.
- Enter BIOS Setting menu (as described above).
- Navigate to Advanced > Network Stack Configuration > Network Stack.
- Select Enabled and then enable the corresponding PXE option.
- Press F4 to Save & Exit.
6.3 Operating System Reinstallation (Windows)
To reinstall Windows OS on your Mini PC:
- Prepare a USB flash disk with an NTFS file system.
- Download the latest Windows image from the MeLE forum (www.mele.cn/support) and decompress the .zip file.
- Copy all system files from the Windows image to the root directory of your USB flash disk.
- Plug the USB flash disk into the Mini PC and connect a keyboard.
- Press the power button and continuously press F7 or Delete to enter the boot menu. Select your USB flash disk to reinstall Windows OS. (No need to install drivers separately with the image provided by MeLE).
- The Mini PC will shut down once the installation process is finished. Unplug the USB flash disk, then press the power button to power on your Mini PC.
6.4 Windows Activation
Each MeLE Mini PC comes with a preinstalled Windows 11 license, supporting Personalization, Windows Update, and repeated reinstallations. The Windows 10 License ID/Product Key sticker is available on the product. Windows will activate automatically when the Mini PC is connected to the internet. If activation fails, visit MeLE's official website support page for assistance.
6.5 Linux Support
The MeLE Quieter3C Mini PC supports Linux Ubuntu OS.
7. Storage Expansion
The Mini PC supports storage expansion via a Micro SD card slot and an M.2 SSD slot.

7.1 M.2 SSD Installation
The Mini PC supports 1x M.2 SATA 2280 or 1x M.2 NVMe 2280 SSD for expansion (SSD not included).

Note: A silicone cooling pad for SSD heat dissipation is included in the package.
7.2 Micro SD Card
Insert a Micro SD card into the Micro SD card slot (5) for additional storage. The slot supports SD3.0 with speeds up to 100MB/s.
8. Specifications
| Feature | Specification |
|---|---|
| Model Number | Quieter3C |
| Processor | Intel Celeron Processor N5105 (Jasper Lake Quad Core, 2.0~2.9 GHz) |
| Graphics | Intel UHD Graphics (Integrated Card) |
| Memory (RAM) | 8GB LPDDR4X (Configurable: 4GB, 8GB, 16GB) |
| Internal Storage | 128GB eMMC (Configurable: 128GB, 256GB, 512GB) |
| Storage Expansion | 1x Micro SD card Slot, 1x M.2 SSD Slot (SATA 2280 / NVMe 2280) |
| USB Ports | 2x USB3.2 Gen2 + 2x USB3.1 Gen1 |
| HDMI Output | 2x HDMI 2.0 (max. 4096x2160 4K@60 Hz) |
| USB Type-C | 1x Full-Function (Power input, Data transfer, DP1.4), 1x Power input only (12V2A, PD protocol) |
| Audio | 3.5mm combo jack |
| Wired Connection | 1000Mbps Gigabit Ethernet |
| Wireless Connection | WiFi 5, Bluetooth 5.1 |
| BIOS Settings | Auto Power ON / Wake on LAN / PXE |
| Security | Kensington Lock Slot |
| Operating System Support | Windows 11 (preinstalled), Linux, Ubuntu, Debian, etc. |
| Product Dimensions | 131 x 81 x 18.3mm |
| Product Weight | 203g |
| Certifications | CE, FCC, PSE |
9. Troubleshooting
9.1 Boot Failure (Monitor EDID Issue)
If the PC stays on the Intel logo without entering the OS, or there is no image displayed on the monitor after pressing the power button (power indicator turns blue, then red), it might be due to the monitor not being ready during startup, preventing the PC from reading the monitor's EDID.
Solution:
- Press the power button and continuously press Delete to enter the BIOS Setting menu.
- Navigate to Advanced > Customer Exclusive Functions > HDMI Delay.
- Change the delay time for reading EDID to 10 seconds.
- Press F4 to Save & Exit.
9.2 4K Video Performance Lagging
4K display performance can be affected by various factors including network speed, HDMI cable quality, monitor settings, and video decoding methods. While the Mini PC supports hardware decoding for smooth 4K local content playback, online 4K video streaming might experience lag.
Recommendation: If 4K video lags, especially with online content, consider lowering the video resolution to 1080p for smoother playback. For demanding 4K tasks, a dedicated graphics card might be required, which is not present in this integrated GPU Mini PC.
9.3 Storage Display Discrepancy (e.g., 128GB eMMC shows 114GB)
This is a common occurrence due to different matrixing methods used by computers and storage device manufacturers.
- Computer Matrixing: 1KB = 1024 Bytes, 1MB = 1024 KB, 1GB = 1024 MB.
- HDD/SSD/eMMC Supplier Matrixing: 1KB = 1000 Bytes, 1MB = 1000 KB, 1GB = 1000 MB.
This difference results in the displayed capacity being slightly lower than the advertised capacity.
9.4 Power Supply Requirements
The Mini PC requires a stable 12V2A power supply. It must be connected with the original MeLE Type-C power supply. Do not attempt to power it with a power bank or other non-original Type-C power supplies, as this may lead to instability or damage.
10. User Tips
- Driver Updates: Regularly check the MeLE official website (www.mele.cn/support) for the latest device drivers and technical support.
- BIOS Reset: If you encounter issues after changing BIOS settings, use the Reset button (8) to perform a CMOS Reset/BIOS Reset.
- Multi-Display Setup: The Mini PC supports triple 4K displays using its two HDMI 2.0 ports and the full-function USB Type-C port (DP1.4). Ensure your cables and monitors support 4K@60Hz for optimal performance.
- Fanless Design: The fanless design ensures quiet operation, making it ideal for environments where noise is a concern.

11. Maintenance
- Cleaning: Use a soft, dry cloth to clean the exterior of the Mini PC. Avoid using liquid cleaners or solvents.
- Ventilation: Ensure that the ventilation openings are not blocked to prevent overheating.
- Software Updates: Keep your operating system and drivers updated to ensure system stability and security.
- Data Backup: Regularly back up important data to an external storage device or cloud service to prevent data loss.
12. Warranty and Support
12.1 Warranty Information
MeLE offers a 12-month warranty for the hardware of each product under normal usage. This warranty excludes deliberate damage, accidents, misuse of the product, or damage caused by repairs or upgrades attempted by unauthorized personnel.
12.2 After-sales Service
MeLE provides 7x24 hours online service. If you encounter any problems with your product, please contact MeLE support. They will offer a satisfactory solution, including new replacement or refund, after confirming the issue.
Contact Information:
- Customer Service: +86 7558636 3239
- Email: meleservice@mele.cn
- Support Web: www.mele.cn/support
- Website: www.mele.cn
12.3 User Manual (PDF)
A PDF version of the user manual is available for download. You can access it directly via this link: MeLE Quieter3C User Manual (PDF).
13. Regulatory Information
13.1 FCC Compliance Statement
This equipment has been tested and found to comply with the limits for a Class B digital device, pursuant to Part 15 of the FCC Rules. These limits are designed to provide reasonable protection against harmful interference in a residential installation. This equipment generates uses and can radiate radio frequency energy and, if not installed and used in accordance with the instructions, may cause harmful interference to radio communications. However, there is no guarantee that interference will not occur in a particular installation. If this equipment does cause harmful interference to radio or television reception, which can be determined by turning the equipment off and on, the user is encouraged to try to correct the interference by one or more of the following measures:
- Reorient or relocate the receiving antenna.
- Increase the separation between the equipment and receiver.
- Connect the equipment into an outlet on a circuit different from that to which the receiver is connected.
- Consult the dealer or an experienced radio/TV technician for help.
Changes or modifications not expressly approved by the party responsible for compliance could void the user's authority to operate the equipment.
This device complies with part 15 of the FCC Rules. Operation is subject to the following two conditions: (1) This device may not cause harmful interference, and (2) this device must accept any interference received, including interference that may cause undesired operation.
FCC Radiation Exposure Statement
This equipment complies with FCC radiation exposure limits set forth for an uncontrolled environment. This equipment should be installed and operated with minimum distance 20cm away from the radiator and your body.
Warning: no modification shall be made by the user that can be of influence on the EMC behaviour of the device without permission of the manufacturer.
13.2 EU/EC Declaration of Conformity (DOC)
Available Online. Visit URL to Download PDF: https://mele.cn/support/Documentation-en.html
MeLE declares that this device is in compliance with the essential requirements and other relevant provisions of Directive 2014/53/EU.
The operating temperature of the device is between 0°C to 35°C.
This product complies with RF specifications when it's used at 20cm from your body.
The UNII Band 1 indoor use only.
This product is a category 1 receiver device.
This product can be used across EU member states.
13.3 Manufacturer Information
Manufacturer: MeLE Technologies (Shenzhen) Co., Ltd.
Address: No.28 Cuijing Road, Pingshan District, Shenzhen (518118) P.R.China





