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NM-FE2W - V2 Not working on Cisco 3660

I inserted a new NM-FE2W - V2 Card into a 3660 Cisco Router but the card is neither detected nor recognised when i dis "shop ip int brief" command. how can I activate this card and make it work on the 3660 Router with IOS image c3660-i-mz.122-5d? The card works on 3845 Router.

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Re: NM-FE2W - V2 Not working on Cisco 3660

Hello Eriakha,

the IOS image is too old for sure.

this because C3660 is declared able to support NM-1GE.


But yours is a second generation network module

Hope to help


Community Member

Re: NM-FE2W - V2 Not working on Cisco 3660

Thank you very much for your prompt response. I have suspected that the IOS is too old for the card. But please how best can I upgrade the IOS? I have attempted to upgrade it sometime ago, but at a stage, it requested for PCMCIA Card; and I dont have it, because I inherited the network, after the former administrator resigned.

Re: NM-FE2W - V2 Not working on Cisco 3660


If you are referring to "NM-1FE2W-V2" or "NM-2FE2W-V2" module then they are supported on 3600 series routers.

However the minimum IOS required for these second generation modules is - 12.2(12)M or 12.2(13)T.

Have a look at the datasheet -

You need an IOS upgrade.

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