<s>
For	O
a	O
brief	O
period	O
it	O
was	O
used	O
for	O
some	O
Token	B-Device
Ring	I-Device
,	O
10BASE-T	B-Protocol
,	O
and	O
100BASE-T4	O
networks	O
,	O
but	O
was	O
quickly	O
superseded	O
by	O
Category	B-Protocol
5	I-Protocol
cable	I-Protocol
.	O
</s>
