Here are the product specifications for the Cisco SM-SRE-910-K9 SRE 910 Services-Ready Module:

Device Type: Services-Ready Engine module
Form Factor: Plug-in module
Ports: 1 x 10/100/1000Base-T LAN
Dimensions (WxDxH): 7.4 in x 7.2 in x 1.6 in
Weight: 2.65 lbs
Processor: Intel Core 2 Duo 2.53 GHz
RAM: 4 GB DDR3 SDRAM
Flash Memory: 8 GB
Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet
Performance: 100 Mbps
Capacity: Concurrent users: 3000, VPN tunnels: 100
OS Provided: Cisco IOS Software
Power: AC 120/230 V (50/60 Hz)
Designed for: Cisco 2921, 2951, 3925, 3925E, 3945, 3945E Integrated Services Routers

The Cisco SM-SRE-910-K9 is a highly capable Services-Ready Engine module that delivers excellent performance, reliability, and flexibility for various networking applications. With a powerful Intel Core 2 Duo processor and 4GB of RAM, it can handle concurrent users and VPN tunnels with ease. It is also compatible with several Cisco Integrated Services Routers, making it an excellent choice for organizations looking to expand their network infrastructure.