<s>
C2T	B-Device
(	O
an	O
abbreviation	O
for	O
Cable	O
Chaining	O
Technology	O
)	O
is	O
an	O
IBM	O
technology	O
for	O
KVM	O
(	O
keyboard	O
,	O
video	O
,	O
mouse	O
)	O
chaining	O
.	O
</s>
<s>
C2T	B-Device
,	O
built	O
into	O
some	O
of	O
the	O
IBM	O
's	O
xSeries	O
and	O
Netfinity	O
models	O
,	O
allows	O
daisy-chaining	B-Application
up	O
to	O
forty-two	O
compatible	O
servers	O
in	O
a	O
single	O
rack	O
.	O
</s>
<s>
The	O
final	O
server	B-Application
in	O
the	O
stack	O
is	O
connected	O
to	O
a	O
monitor/keyboard/mouse	O
or	O
a	O
KVM	B-Device
switch	I-Device
using	O
a	O
C2T	B-Device
breakout	B-Device
cable	I-Device
,	O
which	O
provides	O
PS/2	O
and	O
VGA	O
connectors	O
.	O
</s>
<s>
The	O
breakout	B-Device
cable	I-Device
was	O
once	O
very	O
expensive	O
to	O
purchase	O
new	O
,	O
but	O
are	O
now	O
obtainable	O
for	O
less	O
than	O
$30	O
USD	O
online	O
.	O
</s>
<s>
C2T	B-Device
works	O
thanks	O
to	O
a	O
chip	O
in	O
each	O
server	B-Application
that	O
emulates	O
a	O
KVM	B-Device
switch	I-Device
.	O
</s>
<s>
To	O
take	O
control	O
of	O
a	O
certain	O
xSeries	O
server	B-Application
in	O
the	O
rack	O
,	O
user	O
needs	O
to	O
press	O
Num	O
Lock	O
twice	O
,	O
"	O
nn	O
"	O
(	O
where	O
"	O
nn	O
"	O
is	O
the	O
number	O
of	O
the	O
server	B-Application
)	O
and	O
then	O
press	O
Enter	O
,	O
or	O
could	O
also	O
manually	O
press	O
the	O
button	O
on	O
the	O
front	O
of	O
the	O
desired	O
xSeries	O
server	B-Application
.	O
</s>
<s>
The	O
theory	O
behind	O
C2T	B-Device
is	O
to	O
reduce	O
clutter	O
and	O
save	O
money	O
as	O
no	O
KVM	B-Device
switch	I-Device
is	O
required	O
.	O
</s>
