I bought this to replace a 3 year old refurbished SB6183. 6 months later I had had enough with the CM600 - while ALL the lights were still connected, in fact very often there was no data connection and a reboot was required to recover. Such failures occurred at least twice a month. Eventually a reboot didn't work, the xFinity Troubleshoot couldn't detect the modem so I had to switch back to the SB6183, the connection to Comcast reestablished immediately and has been stable ever since. For now I'm sticking with the Arris modem.
π Juiced Systems Silver BizHUB USB-C Multiport Gigabit HDMI Hub with 3 USB 3.0 Ports, Gigabit Ethernet, 4K HDMI, SD/Micro SD, and USB-C Power Delivery
11 Review
π CERRXIAN RS232 to Ethernet Serial Device Server - TCP/IP Converter with 1Port DB9 RS232 Serial to Ethernet Connectivity
3 Review
UGREEN USB 3.0 Ethernet Adapter Hub with RJ45: Fast Gigabit Ethernet Converter, 3 Ports USB 3.0 Hub Compatible for MacBook, iMac, Surface Pro, Chromebook, Laptop, PC
11 Review
π uni USB C Hub with Ethernet Adapter, 4K HDMI, Gigabit Ethernet, and 3 USB 3.0 Ports for MacBook Pro, iPad Pro, XPS
11 Review