1. Introduction and Overview
The NETGEAR AC1200 WiFi DOCSIS 3.0 Cable Modem Router (Model C6230) is designed to provide high-speed internet access and reliable wireless connectivity for your home or small office. This integrated device combines a DOCSIS 3.0 cable modem with an AC1200 WiFi router, offering speeds suitable for cable plans up to 400Mbps.
Key features include:
- High-Speed Connectivity: Supports cable plans up to 400Mbps (Spectrum), 300Mbps (Xfinity), and 250Mbps (Cox).
- Broad Compatibility: Works with major cable internet providers including Xfinity, Spectrum, and Cox. Not compatible with Verizon, AT&T, CenturyLink, DSL providers, DirecTV, DISH, or bundled voice services.
- Integrated WiFi Router: Features simultaneous dual-band AC1200 WiFi for coverage in medium-sized homes.
- Cost Savings: Replaces rented cable modem and WiFi router, potentially saving monthly rental fees.
- Versatile Ports: Equipped with 2 Gigabit Ethernet ports and 1 USB port for wired connections to various devices.
- Advanced Modem Technology: Utilizes DOCSIS 3.0 and 16x4 channel bonding for efficient data transfer.
- Enhanced Security: Manage settings via the NETGEAR Nighthawk App, including parental controls and support for WPA/WPA2 wireless security protocols.
2. Package Contents
Ensure all items are present in your package:
- AC1200 WiFi Cable Modem Router (C6230)
- Ethernet cable
- Quick install guide
- Power adapter
3. Physical Features
3.1 Front Panel

The front panel features LED indicators that display the status of your modem router. These indicators provide visual feedback on power, internet connectivity, Wi-Fi status, and connected devices.
3.2 Rear Panel

The rear panel provides all the necessary ports for connecting your modem router to your internet service and other devices.
- Power Port: Connects to the power adapter.
- Coaxial Cable Port: Connects to your cable internet service.
- Ethernet Ports (2): For wired connections to computers, gaming consoles, or other network devices.
- USB Port (1): For connecting storage drives or printers.
- Reset Button: Used to restore factory default settings (requires a paperclip or similar pointed object).
4. Setup
4.1 Before You Begin
Before setting up your NETGEAR C6230, ensure you have:
- An active cable internet service subscription.
- A computer or mobile device with a web browser.
- Your cable internet provider account information.
4.2 Installation Steps

Connection Diagram: Coaxial cable and power adapter connections.
- Connect Coaxial Cable: Connect one end of the coaxial cable to the cable wall outlet and the other end to the Cable port on the rear of your modem router.
- Connect Power Adapter: Plug the power adapter into the Power port on the modem router and then into a power outlet. Wait for the Power LED on the front panel to turn solid green.
- Connect to a Computer (Optional, for initial setup):
- Wired Connection: Connect one end of the Ethernet cable to an Ethernet port on the modem router and the other end to the Ethernet port on your computer.
- Wireless Connection: On your computer or mobile device, search for the Wi-Fi network name (SSID) and password printed on the label of your modem router. Connect to this network.
- Activate Your Internet Service: Open a web browser on your connected computer or mobile device. You will typically be redirected to your cable internet provider's activation page. Follow the on-screen instructions to activate your service. If you are not redirected, contact your ISP's customer support.
5. Operating Instructions
5.1 Wi-Fi Connectivity

WiFi Coverage: Up to 1200 sq. ft. and 20 devices.
The C6230 provides dual-band Wi-Fi (2.4 GHz and 5 GHz) for optimal wireless performance. To connect a device:
- On your device, open the Wi-Fi settings.
- Select the Wi-Fi network name (SSID) found on the modem router's label.
- Enter the Wi-Fi password (Network Key) when prompted.
5.2 Ethernet Connectivity
For devices requiring a stable, high-speed wired connection, use the Gigabit Ethernet ports:
- Connect one end of an Ethernet cable to an Ethernet port on your device (e.g., computer, gaming console).
- Connect the other end of the Ethernet cable to one of the yellow Gigabit Ethernet ports on the rear of the modem router.
5.3 NETGEAR Nighthawk App
The NETGEAR Nighthawk App allows you to manage your network settings, monitor connected devices, and implement parental controls directly from your smartphone or tablet. Download the app from your device's app store.
6. Maintenance
To ensure optimal performance and security, regular maintenance is recommended:
- Firmware Updates: The modem router typically receives automatic firmware updates to enhance features and security. Ensure your device is connected to the internet for these updates.
- Security Protocols: The device supports WPA/WPA2 wireless security protocols. Regularly check your network security settings via the Nighthawk App or web interface.
- Physical Cleaning: Keep the modem router in a well-ventilated area and periodically clean dust from its vents to prevent overheating.
7. Troubleshooting
If you encounter issues with your modem router, try the following steps:
- No Internet Connection:
- Check all cable connections (coaxial, Ethernet, power) to ensure they are secure.
- Restart your modem router by unplugging the power adapter, waiting 10 seconds, and then plugging it back in.
- Verify that your internet service is active with your provider.
- Check the LED indicators on the front panel. If the Internet LED is not solid, there might be an issue with your ISP connection.
- Slow Internet Speed:
- Ensure your devices are connected to the appropriate Wi-Fi band (5 GHz for faster speeds, 2.4 GHz for wider coverage).
- Reduce the number of active devices or applications consuming bandwidth.
- Consider upgrading your internet plan if consistently experiencing slow speeds below your subscribed rate.
- Wi-Fi Not Working:
- Check the Wi-Fi LEDs on the front panel. If they are off, press the Wi-Fi On/Off button (if available) or restart the device.
- Ensure your device is within the Wi-Fi coverage area.
- Verify the Wi-Fi network name (SSID) and password.
8. Specifications
| Feature | Specification |
|---|---|
| Model Name | C6230-100NAS |
| Wireless Type | 802.11ac (AC1200) |
| Modem Technology | DOCSIS 3.0, 16x4 Channel Bonding |
| Ethernet Ports | 2 Gigabit Ethernet ports |
| USB Ports | 1 USB port |
| Compatible Devices | Phone, Tablet, WiFi-Enabled Devices, Media Streaming Devices, Computer, PC, Mac, Gaming Consoles |
| Recommended Uses | Gaming, Home |
| Dimensions (LxWxH) | 9.5 x 6.5 x 4.5 inches |
| Item Weight | 12.6 ounces |
| Color | Black |
| Voltage | 240 Volts |
| Operating System | NETGEAR Proprietary Operating System |
9. Warranty and Support
For warranty information and technical support, please refer to the documentation included with your product or visit the official NETGEAR support website. NETGEAR typically offers complimentary technical support for a limited period after purchase.
For further assistance, visit: www.netgear.com/support





