<s>
The	O
Macintosh	B-Device
Quadra	I-Device
660AV	I-Device
,	O
originally	O
sold	O
as	O
the	O
Macintosh	B-Device
Centris	I-Device
660AV	I-Device
,	O
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
July	O
1993	O
to	O
September	O
1994	O
.	O
</s>
<s>
It	O
was	O
introduced	O
alongside	O
the	O
Quadra	B-Device
840AV	I-Device
;	O
the	O
"	O
AV	O
"	O
after	O
both	O
model	O
numbers	O
signifies	O
video	O
input	O
and	O
output	O
capabilities	O
and	O
enhanced	O
audio	O
.	O
</s>
<s>
The	O
660AV	O
was	O
discontinued	O
a	O
few	O
months	O
after	O
the	O
introduction	O
of	O
the	O
Power	B-Device
Macintosh	I-Device
6100/60AV	I-Device
.	O
</s>
<s>
This	O
and	O
the	O
Quadra	B-Device
630	I-Device
were	O
positioned	O
for	O
users	O
who	O
were	O
not	O
ready	O
to	O
move	O
to	O
PowerPC	O
.	O
</s>
<s>
The	O
660AV	O
uses	O
the	O
pizza	B-General_Concept
box	I-General_Concept
form	I-General_Concept
factor	I-General_Concept
of	O
the	O
earlier	O
Centris	B-Device
610	I-Device
.	O
</s>
<s>
The	O
660AV	O
has	O
a	O
full	O
Motorola	B-Device
68040	I-Device
instead	O
of	O
the	O
610	O
's	O
FPU-less	O
68LC040	O
.	O
</s>
<s>
Like	O
the	O
840AV	O
,	O
the	O
660AV	O
features	O
video	O
input/output	O
capability	O
and	O
an	O
onboard	O
AT&T	O
3210	O
digital	B-Architecture
signal	I-Architecture
processor	I-Architecture
(	O
here	O
clocked	O
at	O
55MHz	O
)	O
to	O
make	O
the	O
video	O
handling	O
less	O
of	O
a	O
burden	O
on	O
the	O
CPU	O
.	O
</s>
<s>
The	O
660AV	O
is	O
the	O
first	O
Macintosh	O
to	O
include	O
GeoPort	B-Device
;	O
an	O
optional	O
GeoPort	B-Device
Telecom	O
Adapter	O
enables	O
fax	O
and	O
modem	O
capabilities	O
.	O
</s>
<s>
Some	O
of	O
the	O
earliest	O
Centris	B-Device
660AVs	I-Device
have	O
the	O
older	O
auto-inject	O
floppy	O
drive	O
opening	O
similar	O
to	O
the	O
610	O
,	O
but	O
most	O
of	O
the	O
Centris	B-Device
models	O
and	O
all	O
of	O
the	O
Quadra	B-Device
models	O
have	O
a	O
drive	O
similar	O
to	O
the	O
Power	B-Device
Macintosh	I-Device
6100	I-Device
,	O
lacking	O
the	O
auto-inject	O
feature	O
.	O
</s>
<s>
The	O
Quadra	B-Device
AV	O
Macs	O
introduced	O
a	O
new	O
universal	O
ROM	O
(	O
codenamed	O
SuperMario	O
)	O
that	O
would	O
later	O
be	O
used	O
in	O
all	O
PowerPC	O
systems	O
.	O
</s>
<s>
Jonathan	O
Chevreau	O
of	O
the	O
National	O
Post	O
said	O
on	O
August	O
7	O
,	O
1993	O
,	O
that	O
the	O
Quadra	B-Device
840AV	I-Device
and	O
Centris	B-Device
660AV	I-Device
were	O
the	O
next	O
most	O
interesting	O
multimedia	O
computers	O
behind	O
the	O
new	O
SGI	B-Operating_System
Indy	I-Operating_System
,	O
putting	O
Apple	O
among	O
the	O
forefront	O
of	O
the	O
birth	O
of	O
the	O
major	O
industry	O
of	O
desktop	O
multimedia	O
.	O
</s>
<s>
Byte	O
magazine	O
said	O
in	O
September	O
1993	O
that	O
Apple	O
and	O
Silicon	O
Graphics	O
were	O
trailblazers	O
by	O
setting	O
audio	O
and	O
video	O
input	O
as	O
default	O
features	O
of	O
these	O
two	O
Macintosh	O
and	O
of	O
the	O
Indy	B-Operating_System
desktop	O
PCs	B-Device
,	O
which	O
"	O
could	O
change	O
the	O
way	O
businesspeople	O
communicate	O
"	O
.	O
</s>
