The Cisco NM-1E1R2W is a mixed media Network Module that has one Ethernet interface, one Token Ring interface, and two WAN Interface Card (WIC) slots. The Ethernet interface has both a 10BaseT port and an AUI port, although only one of these ports can be in use at any given time. The Token Ring interface has both a DB-9 port and a RJ-45 port, although only one of these ports can be in use at any given time. The NM-1E1R2W is supported only in Cisco 3600 routers.