First, I'm not Bilingual so excuse my English.
Does C2611XM support NM-1FE2W ?
Cisco Ethernet/Token Ring Mixed Media Network Modules
Table 5. 10/100 LAN/WAN combo Network Modules (NM-1FE2W, NM-2FE2W, NM-1FE1R2W, and NM-2W) platforms supported, minimum Cisco IOS? Release, minimum Memory and Maximum Number Supported.
Cisco 2600XM Series 12.2(8)T