Cisco Cisco IOS Software Release 15.0(1)M

For feature support in Cisco IOS Release 15.0M, see the 

This section contains the following sections with information that is specific to the Cisco 3900 series 
integrated services routers:

The Cisco 3900 series integrated services routers are future-enabled with support for new high-capacity 
digital signal processors for future enhanced video capabilities, high powered service modules with 
improved availability, multicore CPUs, Gigabit Ethernet switching with enhanced POE, and new energy 
visibility and control capabilities while enhancing overall system performance. Additionally, a new 
Cisco IOS Software Universal image and Services Ready Engine module enable you to decouple the 

AIM-VPN/EPII-PLUS 

Enhanced-performance DES, 3DES, AES, and compression 
VPN encryption AIM for the Cisco 3825 

Cisco 3825

AIM-VPN/HPII-PLUS Enhanced-performance DES, 3DES, AES, and compression 

VPN encryption AIM for the Cisco 3845

Cisco 3845

AIM-VPN/SSL-3

Encryption module support

Cisco 3825, Cisco 3825C,
Cisco 3825-NOVPN,
Cisco 3845, Cisco 3845C,
Cisco 3845-NOVPN

MEMUSB-64FT

64-MB USB flash token

Cisco 3825, 
Cisco 3825-NOVPN,
Cisco 3845, 
Cisco 3845-NOVPN

MEMUSB-128FT

128-MB USB flash token

Cisco 3825, Cisco 3825C,
Cisco 3825-NOVPN,
Cisco 3845, Cisco 3845C,
Cisco 3845-NOVPN

MEMUSB-256FT

256-MB USB flash token

Cisco 3825, Cisco 3825C,
Cisco 3825-NOVPN,
Cisco 3845, Cisco 3845C,
Cisco 3845-NOVPN