I've looked through Cisco doc on this router and according to what I've read, this router will support a NM-1FE and not a NM-2FE. That doesn't sound right, can't see why. Does anyone know from experience if it does? Would rather pay the extra $$ and get the extra port.
Latest IOS. Thanks in advance
3660 supports up to 6 NM-2FE2W, please refer to this documentation: