Cisco CISCO2851SRSTK9-RF | 2851SRSTK9-RF 2851 Integrated Service Router 4 x HWIC 1 x Network Module 1 x EVM 3 x PVDM 2 x AIM 2 x 10/100/1000Base-T LAN 2 x USB

Here are 12 technical specifications for the Cisco 2851 Integrated Service Router:

1. Processor: 2.0-GHz dual-core
2. Memory: 1 GB DDR2 SDRAM
3. Flash memory: 256 MB
4. WAN interface: 2-port Gigabit Ethernet
5. LAN interfaces: 2-port 10/100/1000 Ethernet switch
6. Expansion slots: 4 HWIC slots, 1 network module slot
7. VPN support: IPsec and SSL VPN
8. Firewall support: Stateful inspection firewall
9. QoS support: Yes
10. Routing protocols: OSPF, BGP, EIGRP, RIP, static routing
11. Management protocols: SNMP, Telnet, SSH, HTTP, HTTPS
12. Power supply: AC 100/240 V (50/60 Hz)

Helpful notes:
1. The Cisco 2851 is ideal for small to medium-sized businesses that require advanced routing and security features.
2. With its dual-core processor and ample memory, the router can handle high-bandwidth applications and multiple users.
3. The four HWIC slots and network module slot provide flexibility for adding additional interfaces and modules as needed.