Updated: 22nd April 2021
To login into any model of 3com (be it 3CR858-91, 3CRWDR101A-75 or any other), you need router IP, username ID & router password. All this info and other, is already given in 3Com router manuals but if you have lost your manual or you don't have time to go through it and need a quick fix then follow below.
To access the 3Com router admin console of your device, just follow this article. You can find correct 3Com login IP, Router Username & Password, below.
There are 8 3Com Router Models. See below, to find all likely IPs against your particular model number!
| Router Model | Possible Login IP Address |
|---|---|
| 3CR858-91 | 192.168.1.1 |
| 3CRWDR101A-75 | 192.168.1.1 |
| 3CRWDR101E-75 | 192.168.1.1 |
| 3CRWDR300A-73 | 192.168.1.1192.168.1.2192.168.1.254 |
| 3CRWER100-75 | 192.168.1.1192.168.1.2192.168.100.8 |
| 3CRWER200-75 | 192.168.1.1192.168.1.2192.168.100.8 |
| 3CRWER300-73 | 192.168.1.1192.168.1.2192.168.1.254 |
| WL522 | 192.168.1.1192.168.1.2192.168.1.254 |
From the methods given above, if you have found the right IP, then put it into the browser to access admin panel. A screen will appear like below. It's asking for login credentials.
Time and again people from all around the world have off and on told us about login credentials which most likely work for them. With patience, try that applies to your 3Com model.
| Router Model | Username | Password |
|---|---|---|
| 3COM COREBUILDER Rev. 7000/6000/3500/2500 | debug | synnet |
| 3COM COREBUILDER Rev. 7000/6000/3500/2500 | tech | tech |
| 3COM HIPERARC Rev. V4.1.X | adm | (none) |
| 3COM LANPLEX Rev. 2500 | debug | synnet |
| 3COM LANPLEX Rev. 2500 | tech | tech |
| 3COM LINKSWITCH Rev. 2000/2700 | tech | tech |
| 3COM NETBUILDER | admin | (none) |
| 3COM OFFICE CONNECT ISDN ROUTERS Rev. 5X0 | n/a | PASSWORD |
| 3COM SUPERSTACK II SWITCH Rev. 2200 | debug | synnet |
| 3COM SUPERSTACK II SWITCH Rev. 2700 | tech | tech |
| 3COM OFFICECONNECT 812 ADSL | adminttd | adminttd |
| 3COM WIRELESS AP Rev. ANY | admin | comcomcom |
| 3COM CELLPLEX Rev. 7000 | tech | tech |
| 3COM CELLPLEX Rev. 7000 | admin | admin |
| 3COM HIPERARC Rev. V4.1.X | adm | (none) |
| 3COM LANPLEX Rev. 2500 | tech | (none) |
| 3COM CELLPLEX | admin | synnet |
| 3COM SUPERSTACK II SWITCH Rev. 2700 | tech | tech |
| 3COM CELLPLEX Rev. 7000 | root | (none) |
| 3COM HIPERACT Rev. V4.1.X | admin | (none) |
| 3COM CELLPLEX Rev. 7000 | tech | (none) |
| 3COM CELLPLEX Rev. 7000 | admin | admin |
| 3COM SUPERSTACK 3 Rev. 4XXX | admin | (none) |
| 3COM SUPERSTACK 3 Rev. 4XXX | monitor | monitor |
| 3COM SUPERSTACK 3 Rev. 4400-49XX | manager | manager |
| 3COM NETBUILDER | Root | (none) |
| 3COM 3C16450 | admin | (none) |
| 3COM 3C16406 | admin | (none) |
| 3COM OFFICE CONNECT ISDN ROUTERS Rev. 5X0 | n/a | PASSWORD |
| 3COM COREBUILDER Rev. 7000/6000/3500/2500 | n/a | admin |
| 3COM COREBUILDER Rev. 7000/6000/3500/2500 | n/a | (none) |
| 3COM OFFICECONNECT ADSL WIRELESS 11G FIREWALL ROUTER Rev. 3CRWDR100-72 | (none) | admin |
| 3COM INTERNET FIREWALL Rev. 3C16770 | admin | password |
| 3COM SHARK FIN Rev. COMCAST-SUPPLIED | User | Password |
| 3COM 812 | Administrator | admin |
| 3COM CELLPLEX Rev. 7000 | operator | (none) |
| 3COM 3COM SUPERSTACK 3 SWITCH 3300XM | security | security |
| 3COM SUPERSTACK II Rev. 1100/3300 | 3comcso | RIP000 |
| 3COM NETBUILDER | (none) | admin |
| 3COM CELLPLEX Rev. 7000 | tech | tech |
| 3COM SUPER | admin | (none) |
| 3COM CELLPLEX Rev. 7000 | admin | admin |
| 3COM CELLPLEX Rev. 7000 | root | (none) |
| 3COM NETBUILDER | admin | (none) |
| 3COM CELLPLEX Rev. 7000 | operator | (none) |
| 3COM OFFICECONNECT 812 ADSL Rev. 01.50-01 | admin | (none) |
| 3COM CELLPLEX | admin | admin |
| 3COM HIPERACT Rev. V4.1.X | admin | (none) |
| 3COM 3C16405 | n/a | (none) |
| 3COM 3C16405 | Administrator | (none) |
| 3COM SWITCH Rev. 3300XM | admin | admin |
| 3COM SS III SWITCH Rev. 4XXX (4900 - SURE) | recovery | recovery |
| 3COM OFFICECONNECT WIRELESS 11G CABLE/DSL GATEWAY | (none) | admin |
| 3COM 3C16405 | admin | (none) |
| 3COM OFFICECONNECT 812 ADSL Rev. 01.50-01 | admin | (none) |
| 3COM CELLPLEX | n/a | (none) |
| 3COM CELLPLEX | admin | admin |
| 3COM HIPERACT Rev. V4.1.X | admin | (none) |
| 3COM 3C16405 | Administrator | (none) |
| 3COM CELLPLEX Rev. 7000 | tech | (none) |
| 3COM SWITCH Rev. 3300XM | admin | admin |
| 3COM SS III SWITCH Rev. 4XXX (4900 - SURE) | recovery | recovery |
| 3COM OFFICECONNECT WIRELESS 11G CABLE/DSL GATEWAY | (none) | admin |
| 3COM 3CRADSL72 Rev. 1.2 | (none) | 1234admin |
| 3COM CB9000 / 4007 Rev. 3 | Type User: FORCE | (none) |
| 3COM OFFICECONNECT | n/a | (none) |
| 3COM SUPERSTACK II NETBUILDER Rev. 11.1 | n/a | (none) |
| 3COM OFFICECONNECT | admin | (none) |
| 3COM OFFICE CONNECT Rev. 11G | admin | (none) |
Just look closely at your 3Com router for sticker like this:
These are default credentials for your device. Try them, it will work (if you didn't changed them in past)
An ultimate trick in this scenario is to reset your router. Just look for a small button like below (hidden inside). Press it with a needle or match-stick for 10 seconds and restart your device & go back to Method No. 2 (above). And you will be all set!
Luckily, we have compiled list of router setup and configuration manual/manuals for 3Com routers. Currently, 8 manuals are displayed below.
| 3CR858-91 | View Manual | |
| 3CRWDR101A-75 | View Manual | |
| 3CRWDR101E-75 | View Manual | |
| 3CRWDR300A-73 | View Manual | |
| 3CRWER100-75 | View Manual | |
| 3CRWER200-75 | View Manual | |
| 3CRWER300-73 | View Manual | |
| WL522 | View Manual |
These companies are competitor of 3Com & also provide great products.
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