Unmanaged switches require no configuration and are nevertheless adaptable. They use basic standardized protocols, such as autonegotiation, autocrossing and flow control, allowing them to adapt automatically to widely varying transmission speeds or connector assignments. All switches support the use of twisted-pair cabling with RJ45 interface or fiberoptic cable based on the interfaces specified in IEEE 802.3. Weidmuller offers different versions with different features. In addition to the unmanaged switches of the EcoLine, BasicLine and ValueLine, Weidmuller offers Power over Ethernet variants within all lines.