Cisco CISCO3640 | 3640 4-Port 10/100Base-T Fast Ethernet Router

1. Brand: Cisco
2. Model: 3640
3. Ports: 4 x 10/100Base-T Fast Ethernet
4. Network / Transport Protocol: IPSec, PPPoE, PPPoA, DHCP, NAT, ICMP/IP, IPSec NAT Traversal, FTP, TFTP, RTP, PAP, CHAP, ARP, Ethernet, Fast Ethernet
5. Routing Protocol: OSPF, RIP-1, RIP-2, BGP, EIGRP, HSRP, IGMPv2, IGMP, DVMRP, PIM-SM, static IP routing
6. Remote Management Protocol: SNMP 1, SNMP 2, Telnet, SNMP 3, HTTP, HTTPS
7. Data Link Protocol: Ethernet, Fast Ethernet
8. Features: Firewall protection, NAT support, VPN support, manageable, MPLS support, manageable, Quality of Service (QoS), Stateful Packet Inspection (SPI), Weighted Fair Queuing (WFQ), Cisco IOS IP Plus
9. Flash Memory: 16 MB
10. RAM: 64 MB
11. Power Device: Internal power supply
12. Dimensions (WxDxH): 17.5 in x 16.5 in x 3.5 in

Helpful notes:
1. The Cisco 3640 is a versatile router that supports multiple network protocols and features.
2. Its firewall protection and VPN support make it a secure choice for network administrators.
3. With its 4-port Fast Ethernet capability, the Cisco 3640 is ideal for small to medium-sized businesses.