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-1FE1R2W - 10/100 Ethernet 1 4/16 Token-Ring 2 WAN Card Slot NM Cisco Router Network Module Retail $79.00