I-expander yenethiwekhi sisixhobo esinokwandisa ngokufanelekileyo umgama wothumelo lwenethiwekhi. Umgaqo kukumodareyitha umqondiso wedijithali womnatha ube ngumqondiso we-analog ngomgca wefowuni, isibini esijijekileyo, umgca we-coaxial wokudluliselwa, kwaye emva koko uthobe umqondiso we-analog kwinethiwekhi yedijithali umqondiso kwelinye icala. I-extender yenethiwekhi inokwaphula umda womgama wothumelo lwe-Ethernet yemveli ngaphakathi kweemitha ezili-100, kwaye inokwandisa isignali yenethiwekhi ukuya kwi-350 yeemitha okanye nangaphezulu. Yandisa umda womda wothumelo lwenethiwekhi ukusuka kwi-100 yeemitha ukuya kumakhulu eemitha okanye ngaphezulu, kwaye inokuqonda ngokulula ukudityaniswa kwe-hubs, iiswitshi, iiseva, iitheminali kunye neetheminali ezikude.