product description d link ac1900 exo wi fi router wireless router 80211a b g n ac desktop device type wireless router 4 port switch integrated enclosure type desktop data link protocol ethernet fast ethernet gigabit ethernet ieee 80211b ieee 80211a ieee 80211g ieee 80211n ieee 80211ac frequency band 24 ghz 5 ghz remote management protocol http features firewall protection nat support stateful packet inspection spi ipv6 support vpn passthro