Apple Mac 5260/100 - Manual (Page 32)

Specifications I/O Interfaces - 5
Sound Output Two stereophonic sound output ports, level nominally 0.5 V RMS
into 39 ohms
One front headphone jack, one rear stereo mini phonejack
Internal stereo speakers
External Video
Connector
One DB-15 mirror video out connector using optional video
connector kit. This feature provides “mirroring” (or display
of the system’s monitor’s screen on a presentation screen).
(Note: the external video display is presentation only. It cannot
be manipulated directly by mouse or other input signals.)