No warranty card is required, Product serial number is enough for claiming warranty. In case Product package is opened, we will not accept the return of the product. You should claim warranty in case you face any trouble. 300 Mbps Wi-Fi speed isideal for daily tasks including browsing, emailing, and video streaming. IPTV supports IGMP Proxy/Snooping, Bridge and Tag VLAN to optimize IPTV streaming. Guest Network provides separate access for guests while securing the host network. Parental Controls manage when and how connected devices can access the internet. SPI firewall andwireless encryption protectyour home network Compatible with IPv6 (Internet Protocol version 6).