Introduzione
This manual provides essential information for setting up, operating, maintaining, and troubleshooting your GMKtec K15 Mini PC AI Ultra 5 125U. Please read this manual thoroughly before using the device to ensure optimal performance and longevity.
The GMKtec K15 is a high-performance mini PC featuring the Intel Core Ultra 5 125U processor with integrated AI capabilities, Intel Arc 140T GPU, 32GB DDR5 RAM, and a 1TB PCIe 4.0 SSD. It supports quad 8K displays and includes an Oculink port for external graphics expansion, making it suitable for gaming, video editing, and demanding multitasking environments.
Contenuto della confezione
Prima di procedere con la configurazione, verificare che tutti gli elementi siano presenti nella confezione:
- GMKtec NucBox K15 AI Mini PC Ultra 5 125U
- Alimentazione e cavo
- Cavo HDMI
- Manuale dell'utente (questo documento)

Image: Contents of the GMKtec K15 Mini PC retail package.
Istruzioni di installazione
- Connetti le periferiche: Connect your monitor(s) to the available HDMI 2.1, DisplayPort 1.4, or USB Type-C ports. Connect your keyboard and mouse to the USB ports.
- Connetti alimentazione: Plug the power supply cable into the DC Power Input port on the mini PC, then connect the power adapter to an electrical outlet.
- Accensione: Press the power button located on the front panel of the mini PC. The system will boot up.
- Configurazione iniziale del sistema operativo: Seguire le istruzioni visualizzate sullo schermo per completare la configurazione di Windows 11 Pro, inclusa la lingua, la regione, la connessione di rete e la creazione dell'account utente.

Image: GMKtec K15 Mini PC connected to a display and peripherals.
Istruzioni per l'uso
Front and Rear Panel I/O
Familiarize yourself with the input/output ports on your GMKtec K15 Mini PC:

Immagine: dettagliata view of the front and rear I/O ports.
- Pannello frontale: Power Button, USB 3.2 Gen2 x3, Full-Function Type-C, 3.5mm Audio Jack, Reset button.
- Pannello posteriore: DC Power Input, Kensington Lock, 3.5mm Audio Jack, USB4 Port, HDMI Port, Oculink Port, DisplayPort (DP), USB 2.0 x2, 2.5G Ethernet Ports x2, Fan Mode Button.
Configurazione multi-display
The K15 supports up to four 4K/8K displays simultaneously. Connect your monitors to the HDMI 2.1, DisplayPort 1.4, and USB Type-C (supporting DP1.4) ports. Configure display settings within your operating system.

Image: Quad 4K/8K display support for enhanced productivity.
Modalità di prestazione
The K15 Mini PC offers three performance modes to balance power consumption and performance:
- Modalità silenziosa (15 W): Optimized for quiet operation and low power consumption.
- Modalità Bilanciamento (25W): A balanced setting for everyday tasks.
- Modalità Performance (35 W): Massimizza le prestazioni della CPU e della GPU per applicazioni e giochi impegnativi.
You can switch between these modes using the Fan Mode Button on the rear panel or through system software settings.

Image: Three selectable performance modes for varied usage scenarios.
Oculink Port Usage
The Oculink port provides a high-bandwidth PCIe x4 connection for external graphics cards (eGPUs). This allows for significantly enhanced graphics performance for gaming or professional applications. Connect your Oculink-compatible eGPU enclosure to this port. Note: Oculink does not support hot-plugging. Ensure the system is powered off before connecting or disconnecting an eGPU.

Image: Oculink port for external graphics card connectivity.
Video: Un oltreview of the GMKtec K15 AI Mini PC, highlighting its features including the Oculink port for external graphics.
Manutenzione
Pulizia
Regularly clean the exterior of the mini PC with a soft, dry cloth. For dust accumulation in vents, use compressed air. Ensure the device is powered off and unplugged before cleaning.
Aggiornamenti software
Keep your operating system and drivers updated to ensure optimal performance and security. Windows Update will handle OS updates, and GMKtec may provide driver updates on their official support websito.
Espansione di memoria e RAM
The GMKtec K15 features three M.2 2280 expansion slots for PCIe 4.0 SSDs, each supporting up to 8TB, for a total of 24TB. It also supports dual SO-DIMM DDR5 4800MT/S memory sticks, with a maximum capacity of 96GB. Refer to the detailed instructions on the GMKtec support website for safe installation of additional storage or RAM.

Image: Internal layout highlighting RAM and M.2 SSD expansion capabilities.
Sistema di raffreddamento
The K15 is equipped with a triple cooling fan system (dual turbo CPU fans + DDR5/SSD cooling fan) and three advanced heatpipes. Ensure the vents are not obstructed to maintain efficient cooling. The system operates quietly, around 35dB in Quiet Mode.

Image: Dual-fan cooling system design for efficient heat dissipation.
Risoluzione dei problemi
- Nessun potere:
- Ensure the power adapter is securely connected to both the mini PC and a working electrical outlet.
- Verificare che il pulsante di accensione sia premuto saldamente.
- Nessuna visualizzazione:
- Check that the HDMI, DisplayPort, or USB-C cable is securely connected to both the mini PC and the monitor.
- Assicurarsi che il monitor sia acceso e impostato sulla sorgente di input corretta.
- Se disponibile, provare un cavo di visualizzazione o un monitor diverso.
- Nessuna connessione Internet (cablata):
- Verify the Ethernet cable is securely connected to both the mini PC's 2.5GbE LAN port and your router/modem.
- Controllare il corretto funzionamento del router/modem.
- Nessuna connessione Internet (wireless):
- Assicurati che il Wi-Fi sia abilitato nelle impostazioni di Windows.
- Check that you are connected to the correct Wi-Fi network and have entered the password correctly.
- Riavvia il router/modem.
- Rallentamento del sistema:
- Controllare se ci sono applicazioni in background che consumano risorse eccessive.
- Ensure the cooling vents are clear of obstructions.
- Aggiornare i driver e il sistema operativo.
Specifiche
| Caratteristica | Dettaglio |
|---|---|
| Nome del modello | GMKtec NucBox K15 |
| Processore | Intel Core Ultra 5 125U (12 Cores, 16 Threads, up to 4.3 GHz) |
| Grafica | Intel Arc 140T GPU 2.35GHz (8 Xe cores) |
| AI NPU | Intel AI Boost NPU (up to 13 TOPS) |
| Memoria RAM | 32GB DDR5 4800MT/S (Dual Channel, Max 96GB) |
| Magazzinaggio | 1TB PCIe 4.0 M.2 2280 SSD (3x M.2 slots, Max 24TB) |
| Sistema operativo | Windows 11 Pro |
| Uscita video | HDMI 2.1 (8K@60Hz), DisplayPort 1.4 (4K@60Hz), USB Type-C (DP1.4/DATA) - Quad Display Support |
| Fare rete | 2x 2.5GbE LAN, Wi-Fi 6E, Bluetooth 5.2 |
| Porti | USB4 x1, Type-C x1, USB x2, USB 3.2 Gen2 x3, DP 1.4, HDMI 2.1, Oculink, CTIA x2, 2.5G LAN x2, 3.5mm Audio Jack |
| Consumo energetico | 35 Watt |
| Raffreddamento | Triple Cooling Fans with RGB Lighting |
Garanzia e supporto
GMKtec offre un Garanzia limitata di 1 anno for the K15 Mini PC, effective from the date of purchase. This warranty covers defects in design and workmanship.
For technical support, warranty claims, or further assistance, please visit the official GMKtec website or contact their customer service. Keep your purchase receipt as proof of purchase for warranty services.