<s>
Socket	B-Device
1	I-Device
,	O
originally	O
called	O
the	O
"	O
OverDrive	O
"	O
socket	O
,	O
was	O
the	O
second	O
of	O
a	O
series	O
of	O
standard	O
CPU	B-General_Concept
sockets	I-General_Concept
created	O
by	O
Intel	O
into	O
which	O
various	O
x86	B-Operating_System
microprocessors	I-Operating_System
were	O
inserted	O
.	O
</s>
<s>
It	O
was	O
an	O
upgrade	O
to	O
Intel	O
's	O
first	O
standard	O
169-pin	O
pin	B-Algorithm
grid	I-Algorithm
array	I-Algorithm
(	O
PGA	B-Algorithm
)	O
socket	O
and	O
the	O
first	O
with	O
an	O
official	O
designation	O
.	O
</s>
<s>
Socket	B-Device
1	I-Device
was	O
intended	O
as	O
a	O
486	B-General_Concept
upgrade	O
socket	O
,	O
and	O
added	O
one	O
extra	O
pin	O
to	O
prevent	O
upgrade	O
chips	O
from	O
being	O
inserted	O
incorrectly	O
.	O
</s>
<s>
Socket	B-Device
1	I-Device
was	O
a	O
169-pin	O
low	B-Algorithm
insertion	I-Algorithm
force	I-Algorithm
(	O
LIF	B-Algorithm
)	O
or	O
zero	B-General_Concept
insertion	I-General_Concept
force	I-General_Concept
(	O
ZIF	B-General_Concept
)	O
17×17	O
pin	B-Algorithm
grid	I-Algorithm
array	I-Algorithm
(	O
PGA	B-Algorithm
)	O
socket	O
suitable	O
for	O
the	O
5-volt	O
,	O
16	O
to	O
33	O
MHz	O
486	B-Device
SX	I-Device
,	O
486	B-General_Concept
DX	I-General_Concept
,	O
486	B-Device
DX2	I-Device
and	O
486	B-Device
OverDrive	I-Device
processors	O
.	O
</s>
