Cisco NM-1FE-FX-V2 - 1-Port Fast Ethernet Network Module, FX Only Cisco Router Network Module Retail $129.00
Cisco NM-2FE2W-V2 - 2 port 10/100 Ethernet with 2 WAN Card Slot Network Module Cisco Router Network Module Retail $109.00
Cisco NM-CEM-4SER - 4 Port Serial Circuit Emulation over IP NM Cisco Router Network Module Retail $1,499.00