1. Úvod
This manual provides detailed instructions for the setup, operation, maintenance, and troubleshooting of your GMKtec M6 Ultra Gaming Barebone Mini PC. The M6 Ultra is a high-performance mini PC designed for gaming, office work, and multimedia, featuring an AMD Ryzen 5 7640HS processor, dual 2.5GbE LAN, triple 4K display support, WiFi 6, and USB4 connectivity. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.
2. Konec produktuview
2.1 Klíčové vlastnosti
- Procesor: AMD Ryzen 5 7640HS with 6 Zen 4 cores (12 threads), base clock 4.3 GHz, turbo boost up to 5.0 GHz.
- Grafika: Integrated AMD Radeon 760M iGPU with 8 CU (512 shaders) up to 2600 MHz, supporting HW encoding/decoding for AV1, HEVC, AVC.
- Síť: Dual 2.5GbE RJ45 LAN for high-speed data transfer.
- Podpora zobrazení: Triple display output including 8K@60Hz via USB4, and 4K@60Hz via HDMI 2.0 and DisplayPort.
- Bezdrátové připojení: WiFi 6 for ultra-fast internet and Bluetooth 5.2 for peripheral connections.
- Rozšiřitelnost: Supports PCIe 3.0 M.2 2280 SSD (up to 8TB) and dual-channel DDR5 SO-DIMM (up to 128GB, 64GB per slot).
2.2 Porty a konektory
The GMKtec M6 Ultra Mini PC offers a comprehensive set of ports for various connectivity needs.

Figure 2.2.1: Front and Rear Ports of the GMKtec M6 Ultra Mini PC.
- Přední porty: Power Button, 3.5mm Audio Jack (HP&MIC), 1x USB 4.0 (PD/DP/Data), 2x USB 3.2 (Gen2).
- Zadní porty: Security Lock Slot, 1x USB 3.2 (Gen2), 1x USB 2.0, 1x DisplayPort, 1x HDMI 2.0 (4K@60Hz), 2x 2.5G LAN (RJ45), DC IN Power Connector.

Obrázek 2.2.2: Přesview of GMKtec M6 Ultra Mini PC features and specifications.
3. Průvodce nastavením
3.1 Vybalení a obsah balení
Carefully unpack all components from the box. Verify that all items listed below are present.

Figure 3.1.1: Contents of the GMKtec M6 Ultra Mini PC package.
- Nucbox M6 Ultra Mini PC
- Napájecí adaptér
- Uživatelská příručka (tento dokument)
- HDMI kabel
- VESA Mount (with screws)
3.2 RAM and SSD Installation (Barebone Models)
This is a barebone model, meaning RAM and SSD are not included and must be installed by the user. The M6 Ultra supports easy installation and disassembly for upgrades.

Obrázek 3.2.1: Vnitřní view showing slots for RAM and M.2 SSDs.
- BERAN: Install up to two DDR5 SO-DIMM modules, with a maximum capacity of 64GB per slot (128GB total).
- SSD: Install up to two PCIe 3.0 M.2 2280 SSDs. The system supports PCIe 4.0 for SSDs, with a maximum capacity of 8TB per slot.
- Refer to the specific instructions provided with your RAM and SSD modules for detailed installation steps. Ensure the device is powered off and unplugged before opening the chassis.
3.3 Připojení periferních zařízení
- Zobrazit: Connect your monitor(s) using the HDMI, DisplayPort, or USB4 ports.
- Klávesnice a myš: Connect your keyboard and mouse to the available USB ports or via Bluetooth.
- Síť: For wired internet, connect an Ethernet cable to one of the 2.5G LAN ports. For wireless, ensure WiFi is enabled in the operating system.
- Moc: Connect the power adapter to the DC IN port on the mini PC, then plug it into a power outlet.

Figure 3.3.1: The Mini PC can be mounted behind a monitor using the included VESA mount.
4. Návod k obsluze
4.1 Zapnutí/vypnutí
- Zapnutí: Stiskněte tlačítko napájení, které se nachází na přední straně mini PC.
- Vypnout: Use the operating system's shutdown function. For a forced shutdown, press and hold the power button for several seconds.
4.2 Nastavení tří displejů
The M6 Ultra supports connecting up to three displays simultaneously for enhanced productivity.

Obrázek 4.2.1: Přample of a triple display setup with the Mini PC.
- Connect displays to the HDMI 2.0, DisplayPort, and USB4 ports.
- The USB4 port supports 8K@60Hz, while HDMI 2.0 and DisplayPort support 4K@60Hz.
- Configure display settings within your operating system (e.g., Windows Display Settings) to extend or duplicate screens as desired.
4.3 Síťové připojení
The Mini PC offers both wired and wireless high-speed network options.

Figure 4.3.1: Comparison of network speeds for WiFi 6 and 2.5Gbps LAN.
- Kabelová LAN: Connect an Ethernet cable to either of the two 2.5GbE RJ45 ports for a stable and fast wired connection.
- WiFi 6: The integrated WiFi 6 module provides ultra-fast wireless internet with low latency. Ensure your router supports WiFi 6 for optimal performance. Connect via your operating system's network settings.
- Bluetooth 5.2: Use Bluetooth to connect wireless peripherals such as headphones, mice, and keyboards. Pair devices through your operating system's Bluetooth settings.
5. Údržba
Regular maintenance helps ensure the longevity and optimal performance of your GMKtec M6 Ultra Mini PC.
- Čištění: Keep the mini PC in a clean, dust-free environment. Periodically clean the exterior with a soft, dry cloth. Use compressed air to gently clear dust from ventilation grilles to prevent overheating.
- Větrání: Ensure the mini PC has adequate airflow around it. Do not block the ventilation openings.
- Aktualizace softwaru: Regularly update your operating system, drivers, and applications to maintain security and performance.
- Hardware Upgrades: For RAM and SSD upgrades, refer to Section 3.2. Always power off and unplug the device before performing any internal maintenance or upgrades.
6. Řešení problémů
If you encounter issues with your GMKtec M6 Ultra Mini PC, refer to the following common troubleshooting steps.
- Bez napájení:
- Ujistěte se, že je napájecí adaptér bezpečně připojen k mini PC i k funkční zásuvce.
- Ověřte funkčnost elektrické zásuvky zapojením jiného zařízení.
- Bez displeje:
- Check that the display cable (HDMI, DisplayPort, USB4) is securely connected to both the mini PC and the monitor.
- Ujistěte se, že je monitor zapnutý a nastavený na správný vstupní zdroj.
- Zkuste jiný kabel displeje nebo monitor, pokud je k dispozici.
- Problémy s připojením k síti:
- For wired connections, ensure the Ethernet cable is properly connected and your router/modem is working.
- For WiFi, check that WiFi is enabled in your operating system and you are connected to the correct network with the correct password.
- Restartujte router/modem a mini PC.
- Windows Activation Problems (Barebone Models):
- If you are installing Windows for the first time on a barebone unit, it is recommended to create a local account during the initial setup and avoid connecting to the internet until the operating system is fully installed and updated. This can prevent potential activation conflicts if you are using a retail Windows license.
- If activation issues persist, contact Microsoft support or GMKtec customer support.
- Problémy s výkonem systému:
- Zajistěte dostatečné větrání, aby se zabránilo tepelnému škrcení.
- Check for background applications consuming excessive resources.
- Verify that RAM and SSD are correctly installed and functioning.
7. Specifikace
Detailed technical specifications for the GMKtec M6 Ultra Mini PC.

Figure 7.1.1: AMD Ryzen 5 7640HS processor specifications and multi-core performance comparison.
| Funkce | Specifikace |
|---|---|
| Značka | GMKtec |
| Název modelu | M6 Ultra |
| Operační systém | Windows 11 Pro (if installed) |
| Model CPU | AMD Ryzen 5 7640HS |
| CPU Cores/Threads | 6 jader / 12 vláken |
| Rychlost CPU | 4.3 GHz (Base), up to 5.0 GHz (Turbo) |
| Grafický koprocesor | AMD Radeon 760M (integrovaná) |
| Technologie RAM | DDR5 SODIMM |
| Rychlost paměti | 5600 MHz |
| Maximální kapacita RAM | 128 GB (64GB per slot) |
| Technologie skladování | M.2 2280 SSD (PCIe 3.0, supports PCIe 4.0) |
| Maximální kapacita úložiště | Up to 8TB per slot |
| Video výstupní rozhraní | HDMI 2.0, DisplayPort, USB4 |
| Maximální rozlišení obrazovky | 8K@60Hz (USB4), 4K@60Hz (HDMI 2.0, DisplayPort) |
| Technologie připojení | Ethernet (2x 2.5GbE), Wi-Fi 6, Bluetooth 5.2 |
| USB porty | 1x USB 4.0, 3x USB 3.2 (Gen2), 1x USB 2.0 |
| Typ napájecí zástrčky | CEE 7/16 EU |
| PC Design Type | Barebone |
8. Záruka a podpora
GMKtec provides a limited 1-year warranty on each mini PC model, effective from the date of purchase. This warranty covers all design and manufacturing defects.
For technical assistance, troubleshooting, or warranty claims, please contact GMKtec's professional after-sales support team. Refer to the contact information provided on the GMKtec official webwebu nebo v dokumentaci k nákupu.
- Záruční doba: 1 rok od data nákupu.
- Krytí: Design and manufacturing defects.
- Podpora: Professional after-sales support team available.