<s>
The	O
PowerBook	B-Device
170	I-Device
was	O
released	O
by	O
Apple	O
Inc	O
.	O
in	O
1991	O
along	O
with	O
the	O
PowerBook	B-Device
100	I-Device
and	O
the	O
PowerBook	B-Device
140	I-Device
.	O
</s>
<s>
PowerBook	B-Device
line	O
featuring	O
a	O
faster	O
25MHz	O
Motorola	B-Device
68030	I-Device
processor	O
with	O
68882	B-General_Concept
floating	B-General_Concept
point	I-General_Concept
unit	I-General_Concept
(	O
FPU	O
)	O
and	O
a	O
more	O
expensive	O
and	O
significantly	O
better	O
quality	O
active	B-General_Concept
matrix	I-General_Concept
display	O
.	O
</s>
<s>
It	O
was	O
replaced	O
by	O
the	O
PowerBook	B-Device
180	I-Device
in	O
1992	O
.	O
</s>
<s>
Though	O
the	O
PowerBook	B-Device
100	I-Device
is	O
the	O
direct	O
descendant	O
of	O
the	O
Macintosh	B-Device
Portable	I-Device
based	O
on	O
its	O
internal	O
architecture	O
,	O
the	O
170	O
is	O
the	O
Portable	O
's	O
direct	O
successor	O
.	O
</s>
<s>
Initiated	O
as	O
a	O
more	O
suitable	O
replacement	O
for	O
the	O
Portable	O
,	O
the	O
only	O
features	O
the	O
first	O
generation	O
170	O
did	O
not	O
include	O
in	O
its	O
reduced	O
space	O
were	O
an	O
external	O
video	O
port	O
and	O
internal	O
ROM	B-Device
and	O
PDS	B-Device
expansion	O
slots	O
.	O
</s>
<s>
Indeed	O
,	O
Apple	O
canceled	O
its	O
own	O
external	O
monitor	O
adapter	O
for	O
the	O
Portable	O
shortly	O
after	O
it	O
was	O
announced	O
,	O
instead	O
relying	O
on	O
numerous	O
third	O
party	O
providers	O
for	O
solutions	O
(	O
still	O
applicable	O
to	O
the	O
170	O
)	O
and	O
FCC	O
regulations	O
of	O
the	O
day	O
prevented	O
any	O
real	O
use	O
of	O
the	O
PDS	B-Device
expansion	O
slot	O
,	O
by	O
restricting	O
any	O
external	O
connections	O
to	O
it	O
.	O
</s>
<s>
The	O
PowerBook	B-Device
180	I-Device
replacement	O
would	O
address	O
external	O
video	O
less	O
than	O
a	O
year	O
later	O
,	O
but	O
expansion	O
slots	O
would	O
not	O
return	O
to	O
Macintosh	B-Device
portables	I-Device
until	O
three	O
years	O
later	O
with	O
the	O
PowerBook	B-Device
500	I-Device
series	I-Device
,	O
in	O
the	O
form	O
of	O
PCMCIA	B-Architecture
cards	I-Architecture
.	O
</s>
<s>
The	O
170	O
also	O
dropped	O
the	O
external	O
floppy	B-Device
disk	I-Device
port	O
(	O
only	O
the	O
Macintosh	B-Device
Classic	I-Device
II	I-Device
still	O
had	O
one	O
)	O
and	O
made	O
no	O
provision	O
for	O
a	O
second	O
internal	O
floppy	B-Device
disk	I-Device
port	O
(	O
a	O
feature	O
also	O
missing	O
from	O
the	O
rest	O
of	O
the	O
desktop	O
line	O
by	O
this	O
time	O
)	O
.	O
</s>
<s>
Overall	O
,	O
it	O
had	O
roughly	O
the	O
equivalent	O
features	O
and	O
performance	O
of	O
the	O
powerful	O
Macintosh	B-Device
IIci	I-Device
desktop	O
in	O
a	O
laptop	B-Device
.	O
</s>
<s>
The	O
170	O
was	O
introduced	O
with	O
System	B-Operating_System
7.0.1	I-Operating_System
,	O
specifically	O
to	O
support	O
new	O
power	O
management	O
and	O
other	O
unique	O
hardware	O
features	O
.	O
</s>
<s>
However	O
,	O
due	O
to	O
the	O
RAM	O
prices	O
in	O
1991	O
,	O
combined	O
with	O
its	O
already	O
high	O
list	O
price	O
,	O
the	O
170	O
,	O
like	O
the	O
100	O
and	O
140	O
,	O
only	O
had	O
2megabytes	O
(	O
MB	O
)	O
RAM	O
soldered	O
directly	O
onto	O
the	O
logicboard	O
,	O
which	O
critics	O
felt	O
was	O
restrictive	O
for	O
use	O
with	O
System	B-Operating_System
7	I-Operating_System
.	O
</s>
<s>
Further	O
,	O
since	O
localized	O
versions	O
of	O
System	B-Operating_System
7	I-Operating_System
were	O
not	O
yet	O
available	O
worldwide	O
,	O
the	O
Japanese	O
6.0.7	B-Protocol
KanjiTalk	B-Operating_System
version	O
of	O
Apple	O
's	O
System	O
software	O
was	O
modified	O
to	O
support	O
all	O
three	O
new	O
PowerBooks	B-Device
and	O
released	O
as	O
version	O
J-6.0.7.1	O
.	O
</s>
<s>
As	O
a	O
result	O
,	O
this	O
version	O
was	O
unofficially	O
adapted	O
for	O
use	O
with	O
the	O
standard	O
6.0.7	B-Protocol
allowing	O
many	O
users	O
to	O
run	O
System	B-Protocol
6	I-Protocol
on	O
their	O
PowerBooks	B-Device
,	O
rather	O
than	O
upgrading	O
on-board	O
RAM	O
with	O
an	O
expensive	O
proprietary	O
RAM	O
card	O
(	O
a	O
6MB	O
card	O
was	O
US	O
$899	O
)	O
.	O
</s>
<s>
The	O
170	O
shipped	O
with	O
an	O
additional	O
2MB	O
RAM	O
card	O
already	O
installed	O
,	O
so	O
it	O
was	O
less	O
of	O
a	O
problem	O
;	O
however	O
4MB	O
was	O
the	O
minimum	O
recommended	O
RAM	O
size	O
for	O
use	O
with	O
System	B-Operating_System
7	I-Operating_System
and	O
not	O
practical	O
for	O
use	O
with	O
a	O
RAM	B-Application
Disk	I-Application
,	O
a	O
battery	O
power-saving	O
feature	O
.	O
</s>
<s>
Though	O
released	O
at	O
the	O
same	O
time	O
as	O
the	O
PowerBook	B-Device
140	I-Device
and	O
PowerBook	B-Device
100	I-Device
,	O
both	O
the	O
140	O
and	O
170	O
were	O
designed	O
entirely	O
by	O
Apple	O
,	O
while	O
the	O
100	O
was	O
being	O
miniaturized	O
by	O
Sony	O
from	O
the	O
full-sized	O
Macintosh	B-Device
Portable	I-Device
.	O
</s>
<s>
As	O
a	O
result	O
,	O
the	O
170	O
represents	O
the	O
very	O
first	O
PowerBook	B-Device
created	O
by	O
Apple	O
,	O
with	O
the	O
100	O
actually	O
representing	O
the	O
first	O
design	O
improvements	O
,	O
though	O
its	O
internal	O
architecture	O
is	O
the	O
oldest	O
in	O
the	O
series	O
.	O
</s>
