<s>
A	O
SIPP	O
(	O
single	B-General_Concept
in-line	I-General_Concept
pin	I-General_Concept
package	I-General_Concept
)	O
or	O
SIP	O
(	O
single	O
in-line	O
package	O
)	O
was	O
a	O
short-lived	O
variant	O
of	O
the	O
30-pin	O
SIMM	B-General_Concept
random-access	B-Architecture
memory	I-Architecture
.	O
</s>
<s>
It	O
had	O
30	O
pins	O
along	O
one	O
edge	O
which	O
mated	O
with	O
matching	O
holes	O
in	O
the	O
motherboard	B-Device
of	O
the	O
computer	O
.	O
</s>
<s>
This	O
type	O
of	O
memory	O
was	O
used	O
in	O
some	O
80286	B-General_Concept
and	O
80386	B-General_Concept
(	O
80386SX	O
)	O
systems	O
.	O
</s>
<s>
It	O
was	O
soon	O
replaced	O
by	O
SIMMs	B-General_Concept
using	O
edge	O
connectors	O
,	O
which	O
proved	O
to	O
be	O
more	O
economical	O
and	O
durable	O
.	O
</s>
<s>
30-pin	O
SIPP	O
modules	O
were	O
pin	O
compatible	O
with	O
30-pin	O
SIMM	B-General_Concept
modules	O
explaining	O
why	O
some	O
SIPP	O
modules	O
were	O
in	O
fact	O
SIMM	B-General_Concept
modules	O
with	O
pins	O
soldered	O
onto	O
the	O
connectors	O
.	O
</s>
