E-Machines PowerLink Presentor

The E-Machines PowerLink Presentor is a compact portable docking station that was developed by SuperMac Technology and released in 1993 under its E-Machines brand for the PowerBook Duo line from Apple Computer.

Features
Smaller than Apple's Duo MiniDock, but larger than the Duo Floppy Adapter, the PowerLink Presentor still interfaced with a PowerBook Duo notebook through the custom 152-pin docking connector. Instead of a motor or lever, a small button was used to release the device. The ports provided included a single Apple Desktop Bus (ADB) port, a HDI-20 port to attach an external floppy drive, a 3.5 mm headphone jack for audio out, and a and  for video out. The RCA connector uniquely allowed PowerBook Duos to be easily connected to analog CRTs or projectors that were commonplace at the time.

Supported models
The PowerLink Presentor is known to support all 68k-based PowerBook Duo models, though its compatibility with the PowerPC 601-based PowerBook Duo 2300c is unknown.