Can i add Gigabyte module to 1921 Router

[sivakumar shankar]

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.

[Leo Laohoo]

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.

[Joseph W. Doherty]

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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.