Cisco1921/K9 with 2GE, SEC License PAK, 512MB DRAM, 256MB Flash

Cisco 1921 with 2 onboard GE, 2 EHWIC slots, 256MB USB Flash (internal) 512MB DRAM, IP Base 

Cisco 1941 Security Bundle w/SEC license PAK

Cisco 1941 w/2 GE,2 EHWIC slots,256MB CF,512MB DRAM,IP Base

Cisco 1941 Router w/ 802.11 a/b/g/n ETSI Compliant WLAN ISM

 Cisco 1941W Security Bundle w/SEC license PAK, 802.11a/b/g/n

 1GB DRAM (1 DIMM) for Cisco 1941/1941W ISR

2GB DRAM (1 DIMM) for Cisco 1941/1941W ISR