1. Introduction
Thank you for choosing the GMKtec NucBox G5 Mini PC. This compact and powerful computer is designed for a wide range of applications, from home and office use to entertainment and educational purposes. This manual provides essential information for setting up, operating, and maintaining your device, ensuring optimal performance and longevity.
Please read this manual thoroughly before using the product and retain it for future reference.
2. Product Overview
The GMKtec NucBox G5 is a highly compact and portable mini PC, featuring the latest Intel 12th Gen Alder Lake N97 processor. Its small footprint makes it ideal for space-constrained environments while delivering robust performance for daily computing tasks.

Key Features:
- Processor: Intel 12th Gen Alder Lake N97 (4 Cores/4 Threads, up to 3.6GHz)
- Graphics: Built-in Intel UHD Graphics (1.20GHz) with 4K UHD support
- Memory: 16GB DDR5 RAM (onboard)
- Storage: 256GB M.2 SSD (expandable up to 2TB)
- Connectivity: Dual HDMI 4K@60Hz, 3x USB 3.2, 1x Gigabit Ethernet (RJ45), 1x 3.5mm Audio Jack, 1x Micro SD Card Slot, 1x Type-C Power Input
- Wireless: WiFi 5 and Bluetooth 4.2
- Cooling: Smart cooling fan for low noise and high performance
- Operating System: Pre-installed OS Pro (Windows 11 Pro)


3. Setup Guide
3.1 Package Contents:
- 1 x GMKtec NucBox G5 Mini PC
- 1 x Power Adapter (Type-C)
- 1 x User Manual

3.2 Initial Setup:
- Connect to Display: Connect your monitor(s) to the Mini PC using the HDMI ports. The NucBox G5 supports dual 4K@60Hz displays.
- Connect Peripherals: Plug in your keyboard, mouse, and any other USB devices into the available USB 3.2 ports.
- Connect to Network: For a wired connection, connect an Ethernet cable to the RJ45 Gigabit LAN port. For wireless, ensure your WiFi network is available.
- Power On: Connect the Type-C power adapter to the Mini PC and then to a power outlet. Press the power button on the front of the device.
- Operating System Setup: Follow the on-screen instructions to complete the initial setup of the pre-installed OS Pro (Windows 11 Pro). This may include language selection, network configuration, and user account creation.
4. Operating Instructions
4.1 Power Management:
- Power On: Press the power button once.
- Shut Down: Use the operating system's shutdown function.
- Restart: Use the operating system's restart function.
- Sleep Mode: Use the operating system's sleep function.
- Auto Power On: This feature can be configured in the BIOS settings to automatically power on the PC at a scheduled time or after a power loss.
- Wake on LAN (WoL): This feature allows the PC to be woken up remotely over a network. It can be enabled in the BIOS settings.
4.2 Everyday Use:
The NucBox G5 is suitable for various applications:
- Office Use: Efficiently handle word processing, spreadsheets, presentations, and video conferencing.
- Home Entertainment: Stream 4K content, browse the web, and enjoy multimedia.
- Education: Ideal for online learning, research, and educational software.
- Light Gaming: Capable of running less demanding games.
5. Connectivity
The NucBox G5 offers a comprehensive set of ports for versatile connectivity:
- USB 3.2 (Gen2): Three ports for high-speed data transfer with external devices like flash drives, external hard drives, keyboards, and mice.
- HDMI (4K@60Hz): Two ports for connecting to monitors, TVs, or projectors, supporting dual display setups for expanded workspace or immersive viewing.
- RJ45 Gigabit LAN Port: For stable and fast wired network connections.
- 3.5mm Audio Jack: For connecting headphones, speakers, or microphones.
- Micro SD Card Slot: Supports memory cards up to 512GB for additional storage or data transfer.
- Type-C Power: Dedicated port for power input.
- Kensington Lock Slot: For physical security of the device.


6. Storage and Performance
The NucBox G5 comes with a 256GB M.2 SSD, providing fast boot times and quick application loading. For users requiring more storage, the device supports M.2 2242 SATA drives up to 2TB.
6.1 Storage Upgrade:
To upgrade the storage, carefully open the device casing and install a compatible M.2 2242 SATA SSD. Ensure the device is powered off and unplugged before attempting any internal modifications.
6.2 Processor and Graphics:
Equipped with the Intel 12th Gen Alder Lake N97 processor, the NucBox G5 offers improved performance over previous N-series processors. The integrated Intel UHD Graphics ensures smooth 4K video playback and supports various visual tasks.
7. Cooling System
The GMKtec NucBox G5 incorporates a smart cooling fan designed for efficient heat dissipation while maintaining low noise levels. This ensures stable performance even under load, making it suitable for quiet environments like offices or home theaters.
8. Mounting Options
The compact design of the NucBox G5 allows for flexible placement. It can be mounted on a wall or behind a monitor using a compatible VESA mount (not included), providing a clutter-free workspace.
9. Specifications
| Feature | Detail |
|---|---|
| Processor | Intel 12th Gen Alder Lake N97 (up to 3.6GHz) |
| Graphics | Intel UHD Graphics (1.20 GHz) |
| RAM | 16 GB DDR5 (onboard) |
| Storage | 256 GB M.2 SSD (expandable to 2TB) |
| Operating System | OS Pro (Windows 11 Pro) |
| Video Output | 2 x HDMI (4K@60Hz) |
| USB Ports | 3 x USB 3.2 (Gen2) |
| Network | 1 x RJ45 Gigabit Ethernet, WiFi 5 (802.11a/b/g/n/ac) |
| Bluetooth | Bluetooth 4.2 |
| Audio | 1 x 3.5mm Audio Jack |
| Card Reader | 1 x Micro SD Card Slot (Max. 512GB) |
| Power Input | Type-C (12V/3A 36W suggested) |
| Dimensions | 2.83 x 2.83 x 1.75 inches (7.2 x 7.2 x 4.4 cm) |
| Weight | 0.45 lbs (206 grams) |
10. Troubleshooting
Common Issues and Solutions:
- No Power:
- Ensure the Type-C 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 HDMI cable connections to both the Mini PC and the monitor.
- Ensure the monitor is powered on and set to the correct input source (HDMI 1, HDMI 2, etc.).
- Try a different HDMI cable or monitor if available.
- No Internet Connection:
- For wired connection, check the Ethernet cable and router status.
- For wireless connection, ensure WiFi is enabled in the operating system and you are connected to the correct network with the correct password.
- Restart your router and the Mini PC.
- Slow Performance:
- Close unnecessary applications running in the background.
- Check for available storage space; low space can affect performance.
- Ensure the cooling fan is not obstructed and is functioning properly.
- Run a system scan for malware or viruses.
- Peripheral Devices Not Recognized:
- Try connecting the device to a different USB port.
- Ensure the device drivers are up to date in the operating system.
- Restart the Mini PC.
11. Warranty and Support
GMKtec offers a 1-year limited warranty for the NucBox G5 Mini PC, effective from the date of purchase. This warranty covers defects due to design and workmanship.
For Technical Support and Warranty Claims:
- Contact GMKtec-Shop on Amazon:
- Login to your Amazon account.
- Navigate to "Your Orders".
- Find your NucBox G5 purchase and select "Ask Product Question" or "Contact Seller".
- Email After-Sales Team: support@gmktec.com
- 24/7 Customer Support: Available for assistance with product inquiries and issues.
Please have your purchase details and product model number (G5) ready when contacting support.





