Cisco C2921-WAAS-SEC/K9 | 2900 Series 2921 3 x Ports 1000Base-T + 12 x Expansion Slots 2U Rack-mountable Integrated Services Router

1. Dimensions: 3.5 x 17.2 x 12.8 inches
2. Weight: 13.2 pounds
3. Processor: 1.2 GHz dual-core
4. RAM: 512 MB (upgradable to 2.5 GB)
5. Flash Memory: 256 MB (upgradable to 8 GB)
6. WAN Ports: 2
7. LAN Ports: 4
8. Expansion Slots: 4 (2 service module slots, 2 onboard slots)
9. Data Link Protocol: Ethernet, Fast Ethernet, Gigabit Ethernet
10. Network / Transport Protocol: IPSec, L2TPv3, PPPoE, PPTP, DHCP, DNS, TFTP, FTP, RTP, SRTP, SSH, SSL, TCP/IP, UDP/IP, ICMP/IP, IPS, RTCP, HTTP, HTTPS, RTP, RTSP, SIP, SNMP, H.323
11. Power Supply: AC 120/230 V (50/60 Hz)
12. Rack Mountable: Yes (19-inch rack-mountable)

Notes:
1. The router supports up to 50 VPN tunnels for secure remote access.
2. It has integrated security features such as firewall, intrusion prevention, and content filtering.
3. The router is compatible with a wide range of Cisco IOS software features for advanced routing and switching capabilities.