Cisco 800 Series Hardware Installation Manual page 120

Cisco 860, 880, 890 Series
The Cisco 892FSP does not support AIM2-CUE-K9 and AIM2-APPRE-104-K9 because it does not have
Note
an SFC socket.
To upgrade DRAM memory from 512 MB to 1 GB on the Cisco 892FSP, Cisco 896VA, Cisco 897VA,
Note
and Cisco 898EA routers, you should enable the FL-8XX-512U1GB license.
Cisco Integrated Services Router Hardware Installation Guide
1-100
Chapter 1 Product Overview