1. Introducere
The GMKtec K12 Mini PC is a high-performance desktop computer designed for various applications, from household use to demanding business and gaming environments. Featuring an AMD Ryzen™ 7 H 255 processor, DDR5 memory, PCIe4.0 SSD support, and advanced connectivity options like WiFi 6E and Dual 2.5G LAN, it offers a powerful and compact computing solution.
2. Conținutul pachetului
Înainte de a continua configurarea, vă rugăm să vă asigurați că toate articolele enumerate mai jos sunt prezente în pachet:
- Nucbox K12 Mini PC
- Adaptor de alimentare
- Suport VESA cu șuruburi
- Manual de utilizare (acest document)
- Cablu HDMI

3. Ghid de instalare
3.1 Configurare inițială
- Conectare alimentare: Plug the power adapter into the DC IN port on the Mini PC and then into a power outlet.
- Conectați afișajul: Use the provided HDMI cable or a DisplayPort cable to connect your monitor to the HDMI 2.1 or DP 1.4 port on the Mini PC. The device supports up to 4 screens simultaneously with 8K resolution.
- Conectați periferice: Connect your keyboard, mouse, and other USB devices to the available USB ports (USB 3.2 Gen2, USB 2.0, USB 4.0).
- Conexiune retea: For a wired connection, plug an Ethernet cable into one of the Dual 2.5G LAN ports. For wireless, ensure your WiFi 6E and Bluetooth 5.2 are enabled on the device and connect to your network/devices.
- Pornire: Apăsați butonul de alimentare situat în partea frontală a Mini PC-ului.
3.2 Instalarea suportului VESA
The GMKtec K12 Mini PC can be mounted to the back of a compatible monitor using the included VESA mount and screws. This saves desk space and provides a clean setup.

3.3 Storage and Memory Installation (for NO RAM NO SSD NO OS models)
If you purchased the "NO RAM NO SSD NO OS" option, you must install your own memory module and hard drive, and install/activate the operating system yourself. An activation code is not provided.
The Mini PC features a disassembled design for easy upgrades. It supports:
- SSD: Three M.2 2280 SSD slots (PCIe 4.0), with a maximum capacity of 8TB per slot (total max 24TB).
- RAM: Dual-channel SO-DIMM DDR5 5600MHz slots, with a maximum capacity of 64GB per slot (total max 128GB).

4. Instrucțiuni de utilizare
4.1 Pornire/Oprire
- Pornire: Apăsați butonul de pornire de pe panoul frontal.
- Oprire: 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).
4.2 Porturi de conectivitate
The GMKtec K12 offers a variety of ports for extensive connectivity:

- Porturi frontale:
- 2 x USB 3.2 Gen2
- 1 x USB 2.0
- 1 x USB 4.0 (PD/DP/Data/charger compatible, Data only)
- 1 x mufă audio de 3.5 mm
- Buton de alimentare
- Butonul de resetare CMOS
- Porturi din spate:
- 1 x DC IN
- 1 x HDMI 2.1 (8K la 120Hz)
- 1 x DisplayPort 1.4 (8K la 120Hz)
- 2 x 2.5G LAN (Ethernet)
- 1 x USB 2.0
- 1 x OCuLink (PCIe Gen4x4)
Note on OCuLink Port: This interface does not support hot-plugging. Please ensure the computer is powered off before connecting or unplugging any device from the OCuLink port.
4.3 Conectivitate fără fir
The Mini PC is equipped with advanced wireless capabilities:
- WiFi 6E: Provides faster and more reliable wireless internet connection.
- Bluetooth 5.2: Pentru conectarea perifericelor wireless, cum ar fi tastaturi, mouse-uri și căști.

4.4 Moduri de performanță
The K12 Mini PC offers three performance modes to balance power consumption, noise, and performance:
- Mod silențios (TDP 35W): Optimized for low noise and power consumption, suitable for light tasks.
- Mod echilibrat (TDP 54W): A good balance between performance and noise, ideal for everyday use.
- Mod de performanță (TDP 70W): Maximizează performanța CPU și GPU pentru aplicații și jocuri solicitante.
You can switch between these modes using the Fan Color Mode Toggle Button, typically located on the side or front panel (refer to Figure 4.1).

| Modul | Putere (TDP) | CPU (Celsius) | Zgomot (dB) |
|---|---|---|---|
| Linişti | 35-40W | 50 | 32-35 |
| Normal (Balanced) | 54-60W | 65 | 36-37 |
| Performanţă | 65-70W | 75 | 39-40 |
5. Întreținere
5.1 Curățare
- Curățați regulat exteriorul Mini PC-ului cu o lavetă moale și uscată.
- Use compressed air to clear dust from ventilation openings to ensure optimal airflow and cooling.
- Asigurați-vă că dispozitivul este oprit și deconectat înainte de curățare.
5.2 Actualizări de software
- Keep your operating system and drivers updated to ensure stability, security, and optimal performance.
- Check the GMKtec official website for the latest driver updates for your K12 Mini PC.
5.3 Hardware Upgrades
The K12 Mini PC is designed for easy hardware upgrades. Refer to Section 3.3 for detailed instructions on installing RAM and SSDs. Always power off and unplug the device before opening the chassis for any hardware modifications.

6. Depanare
- Fără putere: Asigurați-vă că adaptorul de alimentare este conectat corect atât la Mini PC, cât și la o priză funcțională. Încercați o altă priză.
- Fără afișare: Check that the HDMI/DisplayPort cable is firmly connected to both the Mini PC and the monitor. Ensure the monitor is powered on and set to the correct input source.
- Probleme de performanță: Verify that the Mini PC is set to the appropriate performance mode (see Section 4.4). Ensure adequate ventilation and clean any dust from the cooling vents. Close unnecessary background applications.
- Probleme de conectivitate la rețea: For wired connections, check the Ethernet cable and router. For wireless, ensure WiFi is enabled and you are connected to the correct network. Restart your router/modem.
- OCuLink Device Not Detected: Remember that the OCuLink port does not support hot-plugging. Ensure the Mini PC is powered off before connecting or disconnecting any OCuLink device.
- Perifericul nu funcționează: Try connecting the peripheral to a different USB port. Ensure drivers are installed if required by the peripheral.
7. Specificații
| Caracteristică | Detaliu |
|---|---|
| Procesor | AMD Ryzen™ 7 H 255 (8 Cores, 16 Threads, Max 4.9GHz, 16MB Cache, 4nm Tech, 35-54W TDP) |
| Grafică | AMD Radeon™ 780M Graphics (2600MHz) |
| Memorie | Dual-channel DDR5 5600MT/s SO-DIMM (Max 128GB) |
| Depozitare | 3 x M.2 2280 PCIe 4.0 SSD slots (Max 8TB per slot, total 24TB) |
| Conectivitate wireless | WiFi 6E, Bluetooth 5.2 |
| Conectivitate prin cablu | 2 x 2.5G LAN (Ethernet) |
| Ieșire video | 1 x HDMI 2.1 (8K@120Hz), 1 x DisplayPort 1.4 (8K@120Hz), 1 x USB 4.0 (DP Alt Mode) - Supports Quad Screens 8K display |
| Porturi USB | 2 x USB 3.2 Gen2, 2 x USB 2.0, 1 x USB 4.0 (Full Featured) |
| Alte porturi | 1 x OCuLink (PCIe Gen4x4), 1 x 3.5mm Audio Jack, DC IN, CMOS Reset |
| Sistem de operare | Compatible with Windows 11 Pro, Linux, Ubuntu |
| Sistem de racire | Dual cooling fans with copper base, surround convection airflow, smart system fans, RGB lighting |
| Dimensiuni | 154 x 151 x 73.6 mm |
| Certificare | CE |
8. Sfaturi pentru utilizatori
- OS Installation: If you purchased a model without pre-installed RAM, SSD, or OS, remember to install your preferred operating system (e.g., Windows 11 Pro, Linux, Ubuntu) and necessary drivers after hardware installation.
- Optimizarea performanței: Utilize the three performance modes (Quiet, Balanced, Performance) to match your workload and environment, ensuring optimal balance between power, noise, and speed.
- GPU externă: For enhanced graphics performance, consider connecting an external GPU via the OCuLink port, remembering to power off the Mini PC before connecting or disconnecting.
- Configurare cu afișaje multiple: Ia avanstage of the quad-screen support by connecting up to four monitors for increased productivity or immersive gaming.
9. Garanție și asistență
GMKtec is committed to providing high-quality products. Your GMKtec K12 Mini PC is a certified original product. For any technical assistance, warranty claims, or support inquiries, please contact GMKtec customer service through their official channels. Keep your purchase receipt as proof of purchase for warranty purposes.
For information regarding product authenticity and security, please refer to the 'Certified Original' and 'Security & Privacy' policies provided by the seller or manufacturer.





