1. Introduction
This manual provides detailed instructions for setting up, operating, maintaining, and troubleshooting your Ninkear L12 Pro Mini PC. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.

Figure 1: Ninkear L12 Pro Mini PC overview, highlighting Type-C, DP, HDMI ports, and Windows/Linux OS support.
2. Package Contents
Verify that all items are present in the package:
- 1 x Ninkear L12 Pro Mini PC
- 1 x Power Adapter
- 1 x HDMI Cable
- 1 x User Manual (this document)

Figure 2: Visual representation of the Ninkear L12 Pro Mini PC package contents.
3. Setup Guide
3.1 Connecting Peripherals
- Connect Display(s): Use the HDMI, DisplayPort (DP), or USB Type-C ports to connect your monitor(s). The Mini PC supports up to three displays simultaneously (DP 8K, HDMI 4K, Type-C 4K).
- Connect Keyboard and Mouse: Plug your USB keyboard and mouse into any of the available USB 3.0 or USB 4.0 ports.
- Connect to Network: For wired internet, connect an Ethernet cable to one of the two 2.5G RJ45 ports. For wireless internet, ensure the Wi-Fi antennas (if external) are connected and positioned correctly.
- Connect Audio: If using external speakers or headphones, connect them to the 3.5mm earphone port.

Figure 3: Front and rear view of the Mini PC showing available ports including USB 3.0, Type-C, Headphone/Mic, Power, DC, RJ45, HDMI, and DP.

Figure 4: Illustration of connecting three displays (DP 8K, HDMI 4K, Type-C 4K) to the Mini PC for an extended workspace.
3.2 Powering On
- Connect Power Adapter: Plug the power adapter into the DC input port on the Mini PC, then connect the adapter to a power outlet.
- Power On: Press the power button located on the front of the Mini PC. The power indicator light will illuminate.
3.3 Operating System Setup
The Ninkear L12 Pro supports Windows 10/11 and Linux operating systems. Follow the on-screen instructions for initial OS setup upon first boot.

Figure 5: The Mini PC is compatible with both Windows and Ubuntu operating systems, allowing for a wide range of software applications.
4. Operating Instructions
4.1 Basic Operation
- Power On: Press the power button.
- Power Off: Use the operating system's shutdown function. Alternatively, press and hold the power button for 5 seconds to force a shutdown (not recommended for regular use).
- Restart: Use the operating system's restart function.
4.2 Network Connectivity
- Wired Connection: Connect an Ethernet cable to one of the 2.5G RJ45 ports. The system should automatically detect the connection.
- Wireless Connection (Wi-Fi 6):
- Ensure Wi-Fi is enabled in your operating system settings.
- Select your desired Wi-Fi network from the available list.
- Enter the network password if prompted.

Figure 6: The Mini PC features 2.5G High Speed Ethernet for fast and stable wired network connections, showing read-write and data transfer rates.
4.3 Bluetooth Pairing
The Mini PC supports Bluetooth 5.2 for connecting wireless peripherals.
- Enable Bluetooth in your operating system settings.
- Put your Bluetooth device into pairing mode.
- Select your device from the list of available devices and follow any on-screen prompts to complete pairing.
5. Maintenance
5.1 Cleaning
- Regularly clean the exterior of the Mini PC with a soft, dry cloth.
- Use compressed air to clear dust from ventilation grilles to maintain optimal airflow.
- Do not use liquid cleaners directly on the device.
5.2 Thermal Management
The Ninkear L12 Pro features an intelligent fan active cooling system designed for quiet and efficient operation. Ensure the ventilation openings are not obstructed to prevent overheating.

Figure 7: Diagram illustrating the efficient thermal management system and low noise output (38dB) of the Ninkear L12 Pro Mini PC.
5.3 Upgrading Memory and Storage
The Mini PC supports memory upgrades up to 64GB DDR4 3200MHz (via SO-DIMM*2 slots) and hard drive expansion up to 4TB SSD (via M.2 2280*1 slot). Consult a qualified technician for upgrades if you are unsure.

Figure 8: Visual representation of the 16GB DDR4 memory and 1TB PCIe 3.0 SSD, which can be upgraded.
6. Troubleshooting
If you encounter issues with your Ninkear L12 Pro Mini PC, refer to the following common troubleshooting steps:
- No Power:
- Ensure the power adapter is securely connected to both the Mini PC and a working power outlet.
- Verify the power outlet is functional by plugging in another device.
- No Display:
- Check all display cable connections (HDMI, DP, Type-C) between the Mini PC and the monitor.
- Ensure the monitor is powered on and set to the correct input source.
- Try connecting to a different display or using a different cable.
- No Internet Connection (Wired):
- Verify the Ethernet cable is securely connected to both the Mini PC and your router/modem.
- Check your router/modem for internet connectivity.
- Ensure network drivers are correctly installed in your operating system.
- No Internet Connection (Wi-Fi):
- Ensure Wi-Fi is enabled in your operating system settings.
- Check if you are connected to the correct network and have entered the password correctly.
- Restart your router/modem and the Mini PC.
- Peripheral Not Detected:
- Try plugging the peripheral into a different USB port.
- Ensure the peripheral has its own power source if required.
- Check if necessary drivers are installed for the peripheral.
If problems persist, consult the Ninkear support website or contact customer service.
7. Specifications
Detailed technical specifications for the Ninkear L12 Pro Mini PC:
| Category | Feature | Description |
|---|---|---|
| General | Brand | Ninkear |
| Type | Mini PC | |
| Model | L12 Pro | |
| Color | Silver Grey | |
| Performance & Storage | CPU | Intel Core i9-12900HK |
| CPU Speed | 3.80GHz-5.00GHz | |
| Lithography | Intel 7 | |
| CPU TDP | 45W | |
| Graphics Card | Intel Iris Xe Graphics | |
| Operating System | Windows 11 (supports Windows 10/11, Linux OS) | |
| Memory | 16GB DDR4 3200MHz | |
| Memory Interface | SO-DIMM*2 | |
| Maximum Memory Support | 64GB | |
| Hard Drive | 1TB PCIe 3.0 SSD | |
| Read/Write Speed | 6Gbps | |
| Hard Drive Expansion Interface | M.2 2280*1 | |
| Maximum Storage Support | SSD 4TB | |
| Bluetooth | 5.2 | |
| LAN | Supports 10/100/1000/2500Mbps (Dual 2.5G RJ45) | |
| Wi-Fi | WIFI 6.0 IEEE 802.11ax | |
| Ports | Video Output | 1 x HDMI 2.0 (4K), 1 x DP (8K), 1 x USB 4.0 Type-C (4K) |
| Other Ports | 4 x USB 3.0, 1 x Earphone Port, 2 x 2.5G RJ45 | |
| Power & Cooling | Input | 100~240V AC, 50-60Hz |
| Output | 19V/6.32A 120W | |
| Cooling | Intelligent fan active cooling | |
| Physical Characteristics | Product Weight | 0.478kg |
| Package Weight | 1.08kg | |
| Product Size (L x W x H) | 13 x 12.7 x 5.2cm | |
| Package Size (L x W x H) | 16 x 16 x 9.9cm |

Figure 9: Comprehensive overview of the Mini PC's hardware, including CPU, GPU, memory, storage, and connectivity.

Figure 10: A tabular summary of the Ninkear L12 Pro's general, technical, and physical specifications.
8. Warranty and Support
The Ninkear L12 Pro Mini PC comes with a 2-year warranty, ensuring peace of mind regarding manufacturing defects and hardware failures under normal use.
For technical support, warranty claims, or further assistance, please refer to the official Ninkear support channels or contact your retailer.





