Ma'anar: Ƙwararren cibiyar sadarwa wanda ke goyan bayan gargajiya da kuma Fast Ethernet zaɓar gudun da suke tafiya ta hanyar hanyar da ake kira autosensing . Ƙasantarwa yana da siffar abin da ake kira "10/100" Ethernet hubs , switches , da NICs . Ƙasantawa ya shafi ƙaddamar da hanyar sadarwa ta hanyar amfani da fasaha na ƙananan layi don zaɓar gudu Ethernet dacewa. An ƙaddamar da haɓaka don yin ƙaura daga Ethernet na gargajiya zuwa kayan aikin Ethernet mai sauƙi.
Lokacin da aka haɗa ta farko, na'urori 10/100 suna musayar bayanai da juna tare da juna don yarda akan saitin gudu na kowa. Na'urori suna gudana a 100 Mbps idan cibiyar sadarwa ta goyi bayan shi, in ba haka ba sun sauke zuwa 10 Mbps don tabbatar da "mafi yawan ƙasƙanci" na aikin. Yawancin shafuka da sauyawa suna iya yin amfani da su akan tashar jiragen ruwa ta tashar jiragen ruwa; a wannan yanayin, wasu kwakwalwa a cibiyar sadarwa na iya sadarwa a 10 Mbps da sauransu a 100 Mbps. 10/100 kayayyakin sau da yawa kunsa biyu LEDs daban-daban launuka don nuna wuri gudun da yake a halin yanzu aiki.