Zyxel License for USG FLEX 500, 1 Month for co-termination, Web Filtering(CF)/Anti-Malware/IPS(IDP)/AppZyxel Licenseation Patrol/E
Zyxel License for USG FLEX 500, 2 YR Web Filtering(CF)/Anti-Malware/IPS(IDP)/AppZyxel Licenseation Patrol/Email Security(Anti-Spam