THIN ETHERNET WIRING:
Thin Ethernet needs thin coax cable that is cost effective and easier to install than thick Ethernet coax. In this case transceiver electronics are create into NIC and NIC connects directly to network phase.
Coax cable need BNC connector on NIC. Coax executes directly to back of each connected device by T-connector. The T-connector directly adds to NIC. This is given in the figure below.
Thin Ethernet is very useful when several computers are located close to every one. It can be irreliable because any close connection disrupts entire network.