<s>
The	O
Power	B-Device
Macintosh	I-Device
7500	I-Device
is	O
a	O
personal	B-Device
computer	I-Device
designed	O
,	O
manufactured	O
and	O
sold	O
by	O
Apple	O
Computer	O
from	O
August	O
1995	O
to	O
May	O
1996	O
.	O
</s>
<s>
The	O
7500	O
was	O
introduced	O
alongside	O
the	O
Power	B-Device
Macintosh	I-Device
7200	I-Device
and	O
8500	B-Device
at	O
the	O
1995	O
MacWorld	O
Expo	O
in	O
Boston	O
.	O
</s>
<s>
There	O
were	O
two	O
derivative	O
models	O
:	O
the	O
Power	B-Device
Macintosh	I-Device
7600	I-Device
,	O
identical	O
to	O
the	O
7500	O
except	O
for	O
the	O
CPU	B-General_Concept
which	O
was	O
a	O
PowerPC	O
604	O
or	O
604e	O
processor	O
instead	O
of	O
the	O
7500	O
's	O
601	O
;	O
and	O
the	O
Power	B-Device
Macintosh	I-Device
7300	I-Device
,	O
identical	O
to	O
the	O
7600	O
but	O
without	O
the	O
video	O
inputs	O
found	O
in	O
both	O
the	O
7500	O
and	O
7600	O
.	O
</s>
<s>
The	O
7500	O
is	O
one	O
of	O
the	O
first	O
PCI-capable	O
Macs	O
manufactured	O
by	O
Apple	O
;	O
NuBus	B-Device
expansion	O
cards	O
are	O
not	O
supported	O
.	O
</s>
<s>
It	O
also	O
includes	O
full	O
composite	O
video	O
and	O
s-video	O
input	O
capability	O
,	O
but	O
no	O
output	O
,	O
as	O
the	O
7500	O
was	O
designed	O
to	O
be	O
a	O
video	O
conferencing	O
system	O
,	O
not	O
a	O
multimedia	O
editing	O
machinethis	O
was	O
the	O
8500	B-Device
's	O
task	O
.	O
</s>
<s>
The	O
main	O
bus	O
runs	O
at	O
45	O
MHz	O
or	O
50	O
MHz	O
(	O
set	O
by	O
the	O
CPU	B-General_Concept
daughtercard	O
)	O
,	O
and	O
the	O
CPU	B-General_Concept
at	O
integer	O
or	O
half-integer	O
multiples	O
of	O
this	O
speed	O
.	O
</s>
<s>
The	O
bus	O
can	O
be	O
temperamental	O
with	O
sensitivity	O
to	O
different	O
kinds	O
of	O
RAM	O
or	O
of	O
L2	O
cache	O
,	O
which	O
could	O
cause	O
problems	O
with	O
aftermarket	O
CPU	B-General_Concept
cards	O
trying	O
to	O
increase	O
the	O
clock	O
speed	O
.	O
</s>
<s>
Power	B-Device
Macintosh	I-Device
7500/100	I-Device
:	O
8	O
or	O
16	O
MB	O
RAM	O
,	O
512	O
MB	O
or	O
1	O
GB	O
HDD	O
,	O
AppleCD	B-Device
600i	I-Device
4x	O
CD-ROM	O
drive	O
.	O
</s>
