That router is out of support this year I wouldn't go for something that's end of life
http://www.cisco.com/c/en/us/products/collateral/routers/wrvs4400n-wireless-n-gigabit-security-router-vpn-v2-0/end_of_life_notice_c51-714313.html
http://www.cisco.com/c/en/us/products/collateral/routers/wrvs4400n-wireless-n-gigabit-security-router-vpn-v2-0/end_of_life_notice_c51-714313.pdf
The RV180 is its replacement in doc above
Table 2. Product Part Numbers Affected by This Announcement
End-of-Sale Product
Part Number
Product Description Replacement Product
Part Number
Replacement Product
Description
Additional Information
WRVS4400N Wireless-N Gigabit Security
Router with VPN
RV180W-A-K9-NA Cisco RV180W
Multifunction VPN firewall
-
WRVS4400N-AU Wireless-N Gigabit Security
Router with VPN
RV180W-E-K9-G5 Cisco RV180W
Multifunction VPN firewall
-
WRVS4400N-CN Wireless-N Gigabit Security
Router with VPN
RV180W-E-K9-CN Cisco RV180W
Multifunction VPN firewall
-
WRVS4400N-EU Wireless-N Gigabit Security
Router with VPN
RV180W-E-K9-G5 Cisco RV180W
Multifunction VPN firewall
-
