PowerBook Duo 250

Overview

Introduce in October 1993, the Duo 250 added an active matrix screen to the mix. This plus an improved battery lasts 2.5 hours) did a great deal to increase the popularity of the Duo line.

Details

• introduced October 1993 at $2,500; discontinued May 1994
• requires System 7.1 or later
• 33MHz 68030 CPU; optional 68882 FPU in dock
• 4MB RAM, expandable to 24MB using a single Duo RAM card
• ADB port: only with dock
• DIN-8 serial port on back of computer
• proprietary modem slot
• weight: 4.2 pounds
• upgrade path: Duo 280

 Cautions

• Serial port limited to 57.6kbps; use of a 56k modem is not recommended.