<s>
The	O
PowerBook	B-Device
2400c	I-Device
(	O
codenames	O
:	O
"	O
Comet	O
"	O
,	O
"	O
Nautilus	O
"	O
)	O
is	O
a	O
subnotebook	B-Device
in	O
Apple	O
Computer	O
's	O
PowerBook	B-Device
range	O
of	O
Macintosh	B-Device
computers	I-Device
,	O
weighing	O
.	O
</s>
<s>
In	O
a	O
return	O
to	O
the	O
PowerBook	B-Device
100	I-Device
form	O
factor	O
,	O
it	O
was	O
introduced	O
in	O
May	O
1997	O
as	O
a	O
late	O
replacement	O
for	O
the	O
PowerBook	B-Device
Duo	I-Device
2300c	I-Device
,	O
which	O
had	O
been	O
the	O
last	O
of	O
the	O
subnotebook	B-Device
PowerBook	B-Device
Duo	I-Device
series	O
.	O
</s>
<s>
The	O
2400c	O
was	O
discontinued	O
in	O
March	O
1998	O
,	O
with	O
no	O
immediate	O
replacement	O
—	O
the	O
model	O
that	O
followed	O
it	O
was	O
the	O
much	O
larger	O
PowerBook	B-Device
G3	I-Device
Series	I-Device
(	O
known	O
as	O
"	O
Wallstreet	O
"	O
/	O
"	O
Mainstreet	O
"	O
)	O
.	O
</s>
<s>
Like	O
the	O
PowerBook	B-Device
100	I-Device
and	O
Duo	O
series	O
before	O
it	O
,	O
it	O
was	O
sold	O
with	O
an	O
external	O
floppy	O
drive	O
.	O
</s>
<s>
Apple	O
did	O
not	O
offer	O
a	O
CD-ROM	B-Device
drive	O
for	O
it	O
which	O
was	O
otherwise	O
standard	O
for	O
all	O
other	O
PowerBooks	B-Device
.	O
</s>
<s>
But	O
some	O
users	O
have	O
applied	O
simple	O
motherboard	O
modifications	O
to	O
allow	O
the	O
use	O
of	O
Cardbus	O
expansion	B-Device
cards	I-Device
as	O
well	O
,	O
extending	O
the	O
practical	O
life	O
of	O
this	O
subcompact	O
until	O
a	O
replacement	O
was	O
eventually	O
offered	O
by	O
Apple	O
.	O
</s>
<s>
The	O
2400	O
is	O
built	O
around	O
a	O
active	B-General_Concept
matrix	I-General_Concept
color	O
LCD	O
screen	O
,	O
making	O
the	O
computer	O
very	O
compact	O
indeed	O
—	O
it	O
is	O
slightly	O
smaller	O
and	O
lighter	O
,	O
though	O
a	O
bit	O
thicker	O
,	O
than	O
a	O
iBook	B-Device
,	O
and	O
the	O
fourth-smallest	O
subnotebook	B-Device
behind	O
the	O
PowerBook	B-Operating_System
G4	I-Operating_System
introduced	O
several	O
years	O
later	O
.	O
</s>
<s>
Due	O
to	O
its	O
processor	O
being	O
located	O
on	O
a	O
detachable	O
daughter	B-Device
card	I-Device
,	O
the	O
PowerBook	B-Device
2400c	I-Device
saw	O
a	O
small	O
number	O
of	O
PowerPC	B-Device
G3	I-Device
processor	O
cards	O
created	O
for	O
it	O
.	O
</s>
<s>
This	O
was	O
also	O
the	O
last	O
Mac	B-Device
to	O
not	O
ship	O
with	O
a	O
removable	O
media	O
drive	O
until	O
the	O
MacBook	B-Device
Air	I-Device
in	O
2008	O
.	O
</s>
