Like the 840AV, the 660AV features video input/output capability and an onboard AT&T 3210 digital signal processor (here clocked at 55 MHz) to make the video handling less of a burden on the CPU.
Macintosh | Macintosh II | Macintosh 128K | Quadra Island | Miss MacIntosh, My Darling | Macintosh File System | Tammy MacIntosh | System 7 (Macintosh) | Power Macintosh 8500 | Macintosh SE | Macintosh IIvx | Craig MacIntosh | Quadra FNX Mining | Miguel de la Quadra-Salcedo | Macintosh Toolbox | Macintosh Quadra 950 | Macintosh Plus | Macintosh IIx | Macintosh External Disk Drive | Macintosh (computer) | Macintosh clone | Macintosh Classic | Macintosh 512K | Juan Francisco de la Bodega y Quadra | Charles Macintosh |