Cisco Support Community
Showing results for 
Search instead for 
Did you mean: 

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

Can i add Gigabyte module to 1921 Router

we are using Cisco CISCO1921/K9 (revision 1.0) with 2 Gigabit Ethernet interfaces, we want to expand the LAN connectivity, can i add Gigabyte module to the existing.?


Thanks in Advance.


Hall of Fame Super Gold

we are using Cisco CISCO1921

we are using Cisco CISCO1921/K9 (revision 1.0) with 2 Gigabit Ethernet interfaces

SM-2GE-SFP-CU is not supported on 1900 routers and you can only install ONE EHWIC-1GE-SFP-CU.  You can't install more than one EHWIC-1GE-SFP-CU on a 1900 router. 

If you really want two routeable ports then you'll have to settle with a HWIC-2FE instead.  

Besides, a 1900 router will never be able to push anything close to 1 Gbps per interface.  Save your money and get the HWIC-2FE instead.

Super Bronze

DisclaimerThe Author of this


The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages whatsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.


Cisco recommends the 1921 for up to 15 Mbps WAN circuits, so it's not really a suitable router for LANs using FE or better.  You might want to consider obtaining a L3 switch.

CreatePlease login to create content