The Cisco RVS4000 4-port Gigabit Security Router - VPN is now obsolete (past End-of-Life and End-of-Support status).
End-of-Sale Date: 2012-11-06
End-of-Support Date: 2017-11-30
Cisco's End-of-Life Policy
You can view a listing of available Routers offerings that best meet your specific needs
If you want support information for the Cisco RVS4000 4-port Gigabit Security Router - VPN documentation, it may be available through Cisco.com Search or in the Cisco Community