How to hard reset SURFboard SB6121 router – Default Login & Password

The Motorola SURFboard SB6121 router has No WiFi, 1 Gigabit ETH-ports and 0 USB-ports.
It is also known as the Motorola Motorola SB6121 SURFboard DOCSIS 3.0 Cable Modem.
How to hard reset SURFboard SB6121 - Default Login & Password

How to hard reset (factory reset) SURFboard SB6121 :

You can hard reset your SURFboard SB6121 with ways bellow
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

SURFboard SB6121 default Login & Password, factory settings :

Default Gateway IP: 192.168.100.1
Default subnet mask: 255.255.255.0
Default DNS server: 192.168.100.1

SURFboard SB6121 router specifications :

System specs
CPU: n/a
RAM: 32 MiB
Flash: 8 MiB
Custom firmwares: None
Connectivity
WiFi: No ()
WiFi bands
n/a
WiFi throughput: n/a
WAN
None
ETH
1 x Gigabit port
USB-ports: 0
Motorola SURFboard review (quick overview)
Here is the quick comparison of how the Motorola SURFboard compares to
other routers on our site
Average
30/100
Editor
86/100
WiFi
2/100
Hardware
3/100
Current price
$10.62
For a full list of routers and how they compare to the SURFboard SB6121, check the
Router Buying Guide which will help you buy the most
price-competitive router.