Cisco ISR 4451 (4GE,3NIM,2SM,8G FLASH,4G DRAM) SL-44-UC-K9 Unified Communication License for Cisco ISR 4400 Series SL-44-UC-K9= Unified Communication PAK for Cisco ISR 4400 Series SL-44-SEC-K9= Security PAK for Cisco ISR 4400 Series SL-44-IPB-K9 IP Base License for Cisco ISR 4400 Series SL-44-SECNPE-K9= SEC No Payload Encryption PAK for Cisco ISR 4400 Series SL-44-SECNPE-K9 SEC No Payload Encryption License for Cisco ISR 4400 Series SL-44-SEC-K9 Security License for Cisco ISR 4400 Series SL-44-APP-K9= AppX License for Cisco ISR 4400 Series SL-44-APP-K9 AppX License for Cisco ISR 4400 Series C1F1PISR4400SK9 Cisco ONE Foundation Perpetual License ISR 4400 C1AUPISR4400SK9 Cisco ONE Advanced UC Perpetual License ISR 4400 C1AUAISR4400SK9= Cisco ONE Advanced App Services Perpetual ISR4400 C1F1AISR4451SK9= Cisco ONE Foundation Perpetual ISR4451 C1F1AISR4431SK9= Cisco ONE Foundation Perpetual ISR4431