The New Cisco SA 500 Series Security Appliances

These are a Nice option if you need more than the 10 simultaneous VPN connections that you get with a UC500.
The SA 500 Security appliances  are designed for businesses with fewer than 100 employees. They combine firewall, VPN, and optional intrusion prevention system (IPS), email, and web security capabilities. 

There are Three Models

The SA 520

• Firewall: 200 Mbps
• IPsec VPN: 65 Mbps

• 4 LAN ports
• 2 SSL VPN seats upgradable to 25 seats max with license
• 50 IPsec VPN tunnels

The SA 520W - Adds a built in 802.11b/g/n access point

The SA 540

• Firewall: 300 Mbps
• IPsec VPN: 85 Mbps

• 8 LAN ports
• 50 SSL VPN seats (included)
• 100 IPsec VPN tunnels