Today, standard cable Internet access speeds range from 25 to 50 Mbps. On the high end, Comcast offers an "Xfinity Extreme" service with speeds up to 505 Mbps. Most cable modems include a standard RJ45 port that connects to the Ethernet port on your computer or router.How do I test my cable modem?
To test your modem: On the main menu under Diagnostics, select Test Modem. Select one of the following tests by clicking the corresponding radio button: Performs handshake and offhook tests. If these tests fail, run the handshake test and the offhook test individually to determine the reason for the failure.What is the internet speed spectrum?
Spectrum internet plans are usually in the 60–300 Mbps speed range, which is more than sufficient for streaming HD video (Netflix, Roku, etc). They also offer bundled plans with TV and phone service.