Introduction
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your GMKtec G3 PRO Mini PC. Please read this manual thoroughly before using the device to ensure proper functionality and to maximize your user experience.
The GMKtec G3 PRO is a compact desktop computer featuring an Intel Core i3-10110U processor, 16GB DDR4 RAM, and a 512GB PCIe M.2 SSD. It supports 4K dual HDMI output, WiFi 6, Bluetooth 5.2, and 2.5GbE network connectivity, making it suitable for office, business, and everyday computing tasks.
Qu'y a-t-il dans la boîte
Vérifiez que tous les éléments énumérés ci-dessous sont inclus dans votre colis :
- GMKtec Nucbox G3 PRO Mini PC Intel 16GB RAM 512GB Hard Drive
- Alimentation et câble
- Support VESA avec vis
- Câble HDMI
- Manuel de l'utilisateur (ce document)

Image: Contents of the GMKtec G3 PRO Mini PC retail box, including the mini PC, power adapter, HDMI cable, VESA mount, and user manual.
Caractéristiques du produit
- Processeur: Intel Core i3-10110U with a peak boost clock of 4.1 GHz, offering strong single-core performance and Hyper-Threading for multi-threaded tasks.
- Stockage de mémoire: 16GB DDR4 RAM (dual channel) and a 512GB M.2 2242 SATA SSD. Supports secondary expansion via an M.2 2280 NVMe PCIe slot.
- Connectivité :
- 4x USB 3.2 ports (up to 5Gbps/S)
- 2x HDMI 2.0 ports (4K@60Hz) for dual-screen display
- 1 prise audio 3.5 mm
- WiFi 6 (802.11ax) for speeds up to 600Mbps
- Bluetooth 5.2 for wireless device connections
- 1x Gigabit Ethernet RJ45 2.5GbE port
- Graphique: Upgraded Intel Graphics (max 1000MHz) supporting 4K video playback and AV1 decoding.
- Refroidissement: Upgraded cooling fan and thermal paste for reduced noise and improved thermal management.
- Système opérateur: Windows 11 Pro est préinstallé.
- Fonctions supplémentaires : Supports Wake On LAN, PXE Boot, RTC Wake, and Auto Power On.

Image: Diagram illustrating the Intel Core i3-10110U CPU processor, highlighting its 2 Cores/4 Threads, 4MB Cache, and 4.1GHz speed.

Image : Terminéview of the mini PC's features including dual SSD slots, dual DDR4 support, 4K dual-screen output, Wi-Fi 6, and Bluetooth 5.2.
Guide d'installation
1. Connexion de périphériques
Connect your monitor(s), keyboard, mouse, and other USB devices to the available ports on the mini PC.
- Moniteurs : Use the two HDMI ports to connect up to two displays for a dual-screen setup.
- Périphériques USB : Connect your keyboard, mouse, and other USB peripherals to the USB 3.2 ports.
- Audio: Connect speakers or headphones to the 3.5mm audio jack.
- Réseau: For a wired connection, connect an Ethernet cable to the 2.5GbE RJ45 port. For wireless, ensure your WiFi network is available.

Image : détaillée view of the GMKtec G3 PRO Mini PC's front and rear interfaces, including power button, USB 3.2 ports, HDMI ports, 2.5G LAN, and audio jack.
2. Connexion électrique
Connect the power adapter to the DC 12V 3A port on the mini PC, then plug the power cable into an electrical outlet.
3. Installation du support VESA (en option)
The GMKtec G3 PRO supports VESA mounting, allowing you to attach it to the back of a compatible monitor or to a wall mount for a clutter-free workspace.
- Fixez le support de montage VESA à l'arrière de votre moniteur ou à la surface souhaitée à l'aide des vis fournies.
- Slide the mini PC onto the mounted bracket until it clicks securely into place.

Image: Demonstrates both desktop placement and VESA installation options for the GMKtec G3 PRO Mini PC, highlighting its compact size.
Mode d'emploi
1. Mise sous/hors tension
- Pour allumer : Appuyez sur le bouton d'alimentation situé à l'avant du mini PC. Le voyant d'alimentation s'allumera.
- Pour éteindre : From the operating system, select "Shut down." Alternatively, press and hold the power button for 5-7 seconds to force a shutdown (use only when necessary).
2. Affichage à double écran
The G3 PRO supports dual 4K@60Hz displays via its two HDMI 2.0 ports. Once connected, Windows will automatically detect the displays. You can configure display settings (extend, duplicate, etc.) through the operating system's display settings.

Image: A setup showing the GMKtec G3 PRO Mini PC connected to two monitors, demonstrating its dual-screen display capability for enhanced productivity.
3. Adjusting Performance Modes
The mini PC offers adjustable performance modes to suit different usage scenarios. These modes can be accessed and changed via the BIOS settings.
- Redémarrez le mini PC.
- Au démarrage, appuyez plusieurs fois sur Échap key to enter the BIOS page.
- Navigate to the BIOS Setup and locate the option for performance modes.
- Select from available modes such as Mode silencieux, Mode normal (par défaut), ou Mode Performance.
- Save changes and exit BIOS to apply the new setting.

Image: Illustrates the three performance modes (Quiet, Normal, Performance) and shows how to access the BIOS setup by pressing the Esc key.
Entretien
1. Nettoyage
- Regularly clean the exterior of the mini PC with a soft, dry cloth.
- Use compressed air to gently clear dust from the ventilation openings to ensure proper airflow and cooling.
- Évitez d'utiliser des nettoyants liquides directement sur l'appareil.
2. Extension de stockage
The GMKtec G3 PRO supports storage expansion. It has a secondary M.2 2280 NVMe PCIe slot for additional storage.
- Assurez-vous que le mini PC est éteint et débranché de la source d'alimentation.
- Ouvrez soigneusement le casing according to the instructions provided in the full user manual (if applicable).
- Install the M.2 2280 NVMe SSD into the designated slot.
- Fixez le SSD et réassemblez le casing.

Image : Une explosion view of the GMKtec G3 PRO Mini PC, showing its internal components including the cooling fan, DDR4 slots, M.2 2242 SATA, and M.2 2280 SSD slots.
3. Système de refroidissement
The G3 PRO features an upgraded cooling fan designed for quiet operation. To maintain optimal performance and longevity, ensure the ventilation areas are not obstructed.

Image: Depicts the GMKtec G3 PRO Mini PC's smart quiet cooling fan, emphasizing its ultra-quiet operation (below 38dB) for a sleep-friendly and focused work environment.
Dépannage
| Problème | Cause possible | Solution |
|---|---|---|
| Pas de courant | Câble d'alimentation non connecté, adaptateur secteur défectueux, problème de prise électrique. | Ensure power cable is securely connected. Test power adapter with another device or try a different outlet. |
| Aucun affichage sur le moniteur | HDMI cable loose or faulty, incorrect input selected on monitor, monitor issue. | Check HDMI cable connections. Ensure monitor is set to the correct input source. Test with a different monitor or cable. |
| Pas de connexion internet (filaire) | Ethernet cable loose or faulty, router/modem issue, network driver issue. | Check Ethernet cable connection. Restart router/modem. Verify network drivers are installed and updated. |
| Aucune connexion internet (sans fil) | WiFi disabled, incorrect password, router/modem issue, WiFi driver issue. | Ensure WiFi is enabled in Windows settings. Re-enter WiFi password. Restart router/modem. Verify WiFi drivers are installed and updated. |
| Système lent ou ne répondant pas | Too many applications running, low disk space, overheating, malware. | Close unnecessary applications. Free up disk space. Ensure proper ventilation. Run antivirus scan. Consider adjusting performance mode in BIOS. |
Caractéristiques
| Fonctionnalité | Détail |
|---|---|
| Modèle | G3 PRO |
| Processeur | Intel Core i3-10110U (4.1 GHz max boost) |
| Noyaux/Threads | 2 cœurs / 4 threads |
| BÉLIER | 16GB DDR4 SO-DIMM (Dual Channel, 2666 MHz) |
| Stockage | 512GB M.2 2242 SATA SSD (Primary), M.2 2280 NVMe PCIe slot (Secondary) |
| Graphique | Intel Graphics (max 1000MHz), Integrated |
| Sortie vidéo | 2 ports HDMI 2.0 (4K à 60 Hz) |
| Ports USB | 4x USB 3.2 (up to 5Gbps/S) |
| Audio | Prise audio 3.5mm |
| Réseau | WiFi 6 (802.11ax), Bluetooth 5.2, 2.5GbE RJ45 LAN |
| Système opérateur | Windows 11 Pro |
| Dimensions | 6.42 x 6.18 x 4.09 pouces (Emballage) |
| Poids | 2.09 livres |
| Couleur | Asphalt Grey |
Garantie et assistance
GMKtec propose un Garantie limitée de 1 ans for each mini PC, effective from the date of purchase. This warranty covers defects due to design and workmanship.
For technical assistance, troubleshooting, or warranty claims, please contact GMKtec customer support. Refer to the official GMKtec webPour obtenir les informations les plus récentes sur les canaux d'assistance, veuillez consulter le site ou les coordonnées fournies lors de votre achat.
Remarque : Conservez votre preuve d'achat pour la validation de la garantie.





