How to factory reset Arris CM550A router – Default Login & Password

The Arris CM550A router has No WiFi, 1 100mbps ETH-ports and 0 USB-ports.

Arris CM550A default Password , Login & Gateway settings :

If you have performed a reset of your CM550A device or not changed the defaults, you
should
be able to access it with the following settings
Default subnet mask: 255.255.255.0

How to factory reset (hard reset) Arris CM550A :

You can factory reset your Arris CM550A in the following way(s)
1. When the router is on, press the button reset and hold for 30 seconds.
2. While holding down the button reset, turn off the power of the router and hold down the button reset for 30 seconds
3. While holding down the button reset, turn on the power to the unit again and hold for another 30 seconds

Arris CM550A router specifications :

System specs
CPU: n/a
RAM: 8 MiB
Flash: 2 MiB
Custom firmwares: None
Connectivity
WiFi: No ()
WiFi bands
n/a
WiFi throughput: n/a
WAN
None
ETH
1 x 100mbps port
USB-ports: 0