Introduzione
This manual provides comprehensive instructions for the installation, operation, maintenance, and troubleshooting of your Netgear C6900-100NAR Nighthawk AC1900 Cable Modem Router. This device combines a high-speed cable modem with a powerful AC1900 Wi-Fi router, designed to deliver fast internet and reliable wireless connectivity. Please read these instructions carefully before using the device.
Impostare
1. Contenuto della confezione
Prima di iniziare, verifica che il pacco contenga i seguenti articoli:
- Netgear C6900-100NAR Nighthawk AC1900 Cable Modem Router
- Cavo Ethernet
- Adattatore di alimentazione
- Guida rapida (questo documento funge da guida dettagliata)

Image: Retail packaging for the Netgear C6900-100NAR Nighthawk AC1900 Cable Modem Router, showing the device and branding.
2. Connessione fisica
- Collegare il cavo coassiale: Connect a coaxial cable from your cable wall outlet to the Cable In port on the back of the modem router. Ensure the connection is finger-tight.
- Collegare l'adattatore di alimentazione: Connect the power adapter to the modem router's power port and then plug it into an electrical outlet. The Power LED on the front of the modem router should light up.
- Wait for Online LED: Wait for the Online LED (usually a globe or internet icon) on the front of the modem router to light solid white or green. This indicates that the modem is connected to the internet. This process can take several minutes.
- Connect a Computer (Optional): For initial setup or wired connection, connect one end of the Ethernet cable to an Ethernet port on the modem router and the other end to your computer's Ethernet port.

Immagine: Posteriore view of the Netgear C6900-100NAR, highlighting the coaxial cable input, Ethernet ports, and power input.
3. ISP Activation
After connecting the hardware, you need to activate your modem router with your Internet Service Provider (ISP). You will typically need your account information and the modem's MAC address (found on a label on the device).
- Call your ISP: Contact your ISP's customer support and inform them you are installing a new cable modem. Provide them with the MAC address when requested.
- Attivazione online: Some ISPs offer an online activation portal. Open a web browser on a connected computer, and you may be redirected to the ISP's activation page. Follow the on-screen instructions.
4. Configurazione iniziale del Wi-Fi
Once activated, your modem router will broadcast Wi-Fi networks. The default Wi-Fi network name (SSID) and password (network key) are usually printed on a label on the device.
- Sul tuo dispositivo abilitato al Wi-Fi (laptop, smartphone, tablet), cerca le reti Wi-Fi disponibili.
- Select the Netgear C6900-100NAR's default SSID.
- Quando richiesto, immettere la password Wi-Fi predefinita.

Immagine: frontale e laterale view of the Netgear C6900-100NAR Nighthawk AC1900 Cable Modem Router, showing its vertical design and ventilation.
Operativo
1. Comprensione degli indicatori LED
The LEDs on the front panel provide information about the modem router's status:
- LED di potenza: Solid green indicates power is on. Blinking indicates a startup sequence.
- LED a valle/a monte: Solid green indicates a successful connection to the cable network. Blinking indicates scanning for a connection.
- LED in linea: Solid green indicates successful internet connection. Blinking indicates connection in progress.
- LED Wi-Fi a 2.4 GHz: Solid green indicates the 2.4 GHz Wi-Fi radio is on. Blinking indicates activity.
- LED Wi-Fi a 5 GHz: Solid green indicates the 5 GHz Wi-Fi radio is on. Blinking indicates activity.
- LED Ethernet (1-4): Solid green indicates a device is connected to that port. Blinking indicates data activity.
2. Accesso alle impostazioni del router
To customize your network settings, access the modem router's web interfaccia:
- Aprire un web browser (e.g., Chrome, Firefox, Edge) on a computer or device connected to the modem router (either wired or wirelessly).
- Tipo
routerlogin.netor192.168.0.1nella barra degli indirizzi e premere Invio. - Quando richiesto, immettere il nome utente predefinito (di solito
admin) e password (di solitopassword). These are also typically found on the device label. - You will now be in the Netgear Genie interface, where you can manage your network settings.
3. Configurazione Wi-Fi
Within the router settings, you can modify your Wi-Fi network:
- Cambia SSID: Navigate to the Wireless section to change your Wi-Fi network names (SSIDs) for both 2.4 GHz and 5 GHz bands.
- Cambiare la password: Update your Wi-Fi security key (password) for stronger security. WPA2-PSK [AES] is recommended.
- Rete ospite: Enable a separate guest network for visitors, keeping your main network secure.
The C6900-100NAR features a 1.6GHz combined processor speed, enhancing performance for demanding tasks like streaming and gaming across its dual-band AC1900 Wi-Fi.
Manutenzione
1. Aggiornamenti del firmware
Regularly updating the firmware ensures optimal performance, security, and access to new features. You can usually check for and install updates through the router's web interface under the 'Advanced' or 'Administration' section.
2. Riavvio del dispositivo
If you experience connectivity issues or slow performance, a simple restart can often resolve the problem:
- Unplug the power adapter from the modem router.
- Wait for at least 10-15 seconds.
- Ricollegare l'adattatore di corrente.
- Wait for the modem router to fully boot up and reconnect to the internet (Online LED solid).
3. Pulizia
Keep the modem router in a well-ventilated area. Periodically clean the exterior with a soft, dry cloth. Avoid using liquid cleaners or aerosols directly on the device.
Risoluzione dei problemi
1. Problemi comuni
- Nessuna connessione internet:
- Controllare tutti i collegamenti dei cavi (coassiale, Ethernet, alimentazione).
- Verify LED indicators: Power, Downstream, Upstream, and Online LEDs should be solid. If the Online LED is blinking or off, contact your ISP.
- Restart the modem router (see Maintenance section).
- Confirm ISP activation is complete.
- Velocità Wi-Fi lenta o disconnessioni frequenti:
- Ensure the modem router is centrally located and not obstructed by large objects or other electronics.
- Try connecting to the 5 GHz Wi-Fi band for faster speeds, if your device supports it and is close to the router.
- Controlla gli aggiornamenti del firmware.
- Reduce interference by changing Wi-Fi channels in the router settings.
- Impossibile accedere alle impostazioni del router:
- Ensure your device is connected to the modem router's network.
- Verifica di utilizzare l'indirizzo IP corretto (
routerlogin.netor192.168.0.1) and credentials. - Svuota la cache del browser o prova un altro browser.
2. Ripristino delle impostazioni di fabbrica
If issues persist, a factory reset can restore the modem router to its original settings. Warning: This will erase all custom configurations, including Wi-Fi names and passwords.
- With the modem router powered on, locate the Reset button (often a small pinhole) on the back panel.
- Use a paperclip or similar pointed object to press and hold the Reset button for about 7-10 seconds.
- Release the button when the LEDs start to flash.
- Allow the modem router to restart. You will need to reconfigure your settings or use the default Wi-Fi credentials.
Specifiche
| Caratteristica | Specificazione |
|---|---|
| Marca | NETGEAR |
| Nome del modello | C6900-100NAR |
| Tipo senza fili | 802.11ac |
| Classe di banda di frequenza | Doppia banda (2.4 GHz e 5 GHz) |
| Tecnologia di connettività | Wi-Fi, Ethernet, Coassiale |
| Dispositivi compatibili | Personal Computer, Gaming Consoles, Mobile Devices |
| Usi consigliati | Gaming, Streaming, General Internet Use |
| Peso dell'articolo | 4.07 libbre |
| Dimensioni del pacco | 16.06 x 12.52 x 4.76 pollici |
| Voltage | 100-240 Volt (CA) |
| Tipo di antenna | Interno |
| Caratteristica speciale | DOCSIS 3.0 Cable Modem, WiFi Cable Modem Router |
Garanzia e supporto
For warranty information, please refer to the documentation provided with your product at the time of purchase or visit the official NETGEAR support website. NETGEAR provides technical support and resources for their products.
If you encounter issues that cannot be resolved using this manual, please visit the Supporto NETGEAR websito or contact their customer service for assistance. Ensure you have your model number (C6900-100NAR) and serial number ready when contacting support.





