Installing the printer 27EthernetYour controller includes both an AUI transceiver connector (10 MB/s) and anRJ45 connector (10 or 100Mb/s). Ethernet connections can therefore use Thinor Thick Ethernet or UTP cabling.Note: We recommend using the RJ45 100 Mbit to achieve the highest possibleperformance.AUI: 10Mbit onlyRJ45 (UTP): 10 & 100 Mbit (automatic adjustment).Do not use the AUI and RJ45 simultaneously.Ethernet cablingAn AUI (Attachment Unit Interface) connector is designed to connect a cablefrom the network interface card in your controller to a transceiver mounted onthe backbone Ethernet cable. The backbone cable may be Thin or ThickEthernet cable.[7] AUI portAUI