How to hard reset 3Com Router 3C13840
In order to factory reset your 3com Router 3C13840:
1. While your router is turned on, press the reset button and hold it pressed for about 30 seconds.
2. Still holding the reset button pressed, unplug the the router and hold the reset button for 30 more seconds.
3. Still holding the reset button down, turn on the power to the router again and hold for 30 more seconds.
The default factory settings are: Default IP address:
192.168.1.1 Default username:
admin Default password:
Default subnet mask:
Default DNS server: