3Com Default Usernames & Passwords
The default credentials needed to login to your 3Com router

The majority of 3Com routers have a default username of -, a default password of admin, and the default IP address of 192.168.1.1.

These 3Com credentials are needed when doing a login to the 3Com router's web interface to change any settings.
Since some of the models don't follow the standards, you can see those in the table below.

Below the table are also instructions on what to do incase you forget your 3Com router password, need to reset your 3Com router to its factory default password, or the password reset doesn't work.

3Com default Password List (Valid December 2024)

Instructions and common questions

Forgot your 3Com router password?

Have you changed the username and/or password of your 3Com router and forgotten what you changed it to?
Don't worry: all 3Com routers come with a default factory set password that you can revert to by following the instructions below.

Reset 3Com router to default password

If you decide to revert your 3Com router to it's factory defaults, you should do the 30-30-30 reset as follows:

1. When your 3Com router is powered on, press and hold the reset button for 30 seconds.
2. While still holding the reset button pressed, unplug the power of the router and hold the reset button for another 30 seconds
3. While still holding the reset button down, turn on the power to the unit again and hold for another 30 seconds.

Your 3Com router should now be reset to its brand new factory settings, Check the table to see what those are (Most likely -/admin).
If the factory reset didn't work, check out the 3Com 30 30 30 factory reset guide .

I still can't access my 3Com router with the default password

Make sure that you have followed the reset instructions correctly as the 3Com routers should always rever to their factory default settings when reset.
Otherwise, there is always the risk that your router is damaged and might need to be repaired or replaced.