... , IEEE 802.3u, IEEE 802.3x, CSMA / CA, CSMA / CD, TCP / IP, DHCP, ICMP, NAT, P Vodafone Huawei HG556A 3G Wireless RouterNote ... , IEEE 802.3u, IEEE 802.3x, CSMA / CA, CSMA / CD, TCP / IP, DHCP, ICMP, NAT, PPPoE4: LAN port: 4 10/100M adaptive ...