C2100 modem user guide
Time to upgrade!
The C2100 is an older model. For the best fiber experience, please contact us about an upgrade.
The C2100 is a fiber-ready gateway modem with a built-in wireless router.
Learn about the C2100T or C2100Z modem:
WiFi connection for the C2100
- 2.4 GHz: 802.11 b/g/n
- 5 GHz: 802.11 ac (WiFi 5)
You can connect devices to your WiFi network three different ways:
1. Enter your WiFi password on the device
2. Scan the join code from the Quantum Fiber app
3. Push the WPS button on your modem
Speed specifications
The C2100 gateway is tested and certified to run up to 940 Mbps on the Quantum Fiber network.
Note: Speeds reflect the maximum download speed the technology can deliver Quantum Fiber service. In-home speeds may differ based on router setup, devices and other factors.
Modem settings (GUI)
You can customize your modem settings from the GUI.
Troubleshooting the C2100
- Restarting your modem is a good first step to fix many common problems.
- Take a look at the modem lights guide to learn what those lights are telling you.
- Learn about resetting the modem to its default settings.
- Need more help? Our troubleshooting team is standing by. Contact us through your Quantum Fiber app, or by signing in to your account.
Firmware for the C2100
Tip: If the firmware link doesn't work, try another browser (Chrome is known to have issues with this kind of link). Or, right-click the link, select "copy link address", then paste the link into a new browser tab.
Related topics
-
Restart your modem -
Connect devices -
Change WiFi password -
Modem lights guide -
Equipment troubleshooting
Get the Quantum Fiber app
Manage your Quantum Fiber account
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