Apple Performa 6400/180 - Manual (Page 65)

Specifications I/O Interfaces - 11
TV Tuner One port for TV/FM tuner card. Depending on configuration, a
tuner card may already be installed.
Video-in
One internal expansion slot for video input cards using NTSC, PAL,
and SECAM. Depending on configuration, a video input card may
already be installed. A 60-pin DAV connector on the video input
card supports an optional video card for real-time video
display, capture, and overlay. An adapter cable provides
backward compatibility with DVA cards designed for the Power
Macintosh 5200 computer.
Graphics
Acceleration (6500)
2D and 3D built-in hardware graphics acceleration.