<s>
The	O
IBM	B-Device
Personal	I-Device
System/55	I-Device
Note	I-Device
(	O
stylized	O
as	O
PS/55	B-Device
note	I-Device
)	O
is	O
a	O
series	O
of	O
notebooks	B-Device
manufactured	O
by	O
the	O
IBM	O
subsidiary	O
IBM	O
Japan	O
as	O
part	O
of	O
the	O
IBM	B-Device
Personal	I-Device
System/55	I-Device
series	O
.	O
</s>
<s>
The	O
international	O
IBM	B-Device
PS/2	I-Device
Note	I-Device
series	O
was	O
based	O
on	O
the	O
PS/55	B-Device
Note	I-Device
series	O
.	O
</s>
<s>
IBM	O
started	O
selling	O
the	O
PS/55	B-Device
Note	I-Device
series	O
in	O
Japan	O
in	O
April	O
1991	O
.	O
</s>
<s>
Western	O
Digital	O
has	O
supplied	O
video	O
and	O
logic	O
chips	O
for	O
the	O
PS/55	B-Device
Note	I-Device
.	O
</s>
<s>
The	O
prices	O
for	O
the	O
PS/55	B-Device
Note	I-Device
varies	O
between	O
and	O
.	O
</s>
<s>
The	O
PS/55	B-Device
Note	I-Device
was	O
a	O
rapid	O
success	O
in	O
Japan	O
.	O
</s>
