Image of a 3Com router with 'Router Default Passwords' text and the 3Com logo

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

Info updated Sept. 4, 2021

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

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.

Tip: Press ctrl+f (or cmd+f on Mac) to quickly search for your model number.

3Com default Password List (Valid September 2021)

Model Default Username Default Password Default IP address
3CRWDR101B-75 (WL-552)
3CRWDR101B-75 (WL-552) default factory settings
- admin
3CRWDR300A-73 default factory settings
- admin
3CRWE454G72 default factory settings
- admin
3CRWE454G75 default factory settings
- admin
3CRWE60092A default factory settings
- comcomcom -
3CRWER300-73 default factory settings
- admin
OfficeConnect 3CRWDR200A-75
OfficeConnect 3CRWDR200A-75 default factory settings
- admin
OfficeConnect 3CRWE454A72
OfficeConnect 3CRWE454A72 default factory settings
- admin
OfficeConnect 3CRWE51196
OfficeConnect 3CRWE51196 default factory settings
- admin
OfficeConnect 3CRWE52196
OfficeConnect 3CRWE52196 default factory settings
- admin
OfficeConnect 3CRWE554G72
OfficeConnect 3CRWE554G72 default factory settings
- admin
OfficeConnect 3CRWE554G72TU
OfficeConnect 3CRWE554G72TU default factory settings
- admin
OfficeConnect 3CRWER100-75
OfficeConnect 3CRWER100-75 default factory settings
- admin
OfficeConnect 3CRWER200-75
OfficeConnect 3CRWER200-75 default factory settings
- admin

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 None/admin).
If the factory reset didn't work, check out the 3Com 30 30 30 factory reset guide .

Important: Remember to change the default username and password to increase the security of your router after the factory reset, as the default passwords are available all over the web (like here).

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.