NETSYS Giga Ethernet over Coax Master. MDU / MTU applications. NETSYS Giga Ethernet over Coax Master. MDU / MTU applications. Designed to Connect with NH-310S EoC Slave for MDU and MTU. Connect up to 60 Slaves. Fanless, HPNA 3.1, Q0S, Tag VLAN, Up to 200Mbps.