Macintosh Centris 660AV

The Macintosh Centris 660AV was a part of Apple Computer's short-lived Centris series of Macintosh computers. The Centris 660AV was introduced on July 29, 1993 as the last entry of the new midrange Centris line of computers. The line was discontinued that same year and existing 660AV units were rebadged and sold as the Macintosh Quadra 660AV, starting on October 1, 1993.

Specifications
The specs of the Centris 660AV are completely identical to the Quadra 660AV, differing by exterior markings on the case. It externally resembles a Centris 610, but also includes an AT&T 3210 digital signal processor, in and out,  in and out, and a GeoPort in place of a RS-422 modem port on the back.
 * 25 MHz Motorola 68040
 * 4 to 68 MB of 70ns RAM (4MB soldered to board, and two 72-pin SIMM slots)
 * 1 MB of VRAM (up to 16-bit color at 832 x 624, or 8-bit color at 1152 x 870)
 * 80 to 500 MB SCSI hard drive