ThinNet is a name often given to thin flexible Coax cable used for old style 10Base2 networking. It is also called Ethernet II cable. It has BNC style connectors at each end and requires T connectors and terminators to attach to PC's.
It's called ThinNet because the original style Ethernet was much Thicker.
ThinNet is less than 1cm in diameter. ThickNet however is nearly an inch in diameter and is a horrible unweidly thing to manage.
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