The Ethernet Interface Processor (EIP) provides two (EIP2), four (EIP4), or six (EIP6) high-speed AUI (10 Mbps) ports. Each port on the EIP supports both Ethernet Version 1 and IEEE 802.3/Ethernet Version 2 interfaces. Each Ethernet port requires an Ethernet transceiver or a media attachment unit (MAU) and a transceiver cable or attachment unit interface (AUI) to connect to the external network.