<s>
In	O
telecommunication	O
,	O
the	O
term	O
primary	B-Architecture
channel	I-Architecture
has	O
the	O
following	O
meanings	O
:	O
</s>
<s>
A	O
primary	B-Architecture
channel	I-Architecture
may	O
support	O
the	O
transfer	O
of	O
information	O
in	O
one	O
direction	O
only	O
,	O
either	O
direction	O
alternately	O
,	O
or	O
both	O
directions	O
simultaneously	O
.	O
</s>
<s>
On	O
a	O
computer	O
motherboard	O
,	O
it	O
is	O
the	O
first	O
physical	O
connector	O
for	O
an	O
IDE	B-Protocol
or	O
ATA	B-Protocol
drive	I-Protocol
.	O
</s>
