Duo MiniDock

The PowerBook Duo MiniDock (originally released as Macintosh Duo MiniDock) is a portable docking station that was developed by Apple Computer with SuperMac Technology and released on October 19, 1992, along with the PowerBook Duo 210 and 230.

Features
Like the full-sized Duo Docks, the MiniDock interfaced with a PowerBook Duo notebook through a custom 152-pin docking connector. However, instead of a motor, a lever was used to secure and release the devices. All the ports, drives, and expansion slots of the dock would become accessible by the PowerBook Duo as a NuBus device. It contained 512KB of video RAM that could support up to 8-bit color on a 832 x 624 external display, while the built-in LCD was operating simultaneously.

Variants
The MiniDock was manufactured for Apple by SuperMac Technology, which also released its own version, the EtherDock under its E-Machines brand.

Issues
With repeated use of excessive force, the plastic ejection lever is known to be prone to breakage.

Supported models
The MiniDock can physically fit with and support every released model of the PowerBook Duo line.
 * PowerBook Duo 210 (25Mhz 68030)
 * PowerBook Duo 230 (33Mhz 68030)
 * PowerBook Duo 250 (33Mhz 68030)
 * PowerBook Duo 270c (33Mhz 68030)
 * PowerBook Duo 280 (33Mhz 68LC040)
 * PowerBook Duo 280c (33Mhz 68LC040)
 * PowerBook Duo 2300c (100Mhz PowerPC 601)