Introduced in October 1993, the Duo 270c added an active matrix 640 x 480 pixel 256-color screen to the Duo 230 . With the improved battery, this color Duo could still run for two hours per charge.

The 270c supports 16-bit video on its screen if you select the 640 x 400 pixel mode under Options in the Monitors control panel.

Specs (via Low End Mac)

• Cpu: 33 MHz 68030
• Fpu: 33 MHz 68882
• Performance: 4.6 (relative to SE)
• Ram: 4 MB RAM, expandable to 24 MB using a single Duo RAM card
• Rom: 1 MB
• Display: 9″ 640 x 480 @ 8-bits, 640 x 400 @ 16-bits, 89 ppi active matrix
• Gestalt Id: 77
• Upgrade Path: Duo 280c
• Weight: 4.8 pounds
• Adb Port: only with dock
• Scsi Port: only with dock
• Serial Ports: 1 DIN-8 RS-422 port on back of computer
• Power Supply: M7783
• See: Online resources and links for the PowerBook Duo 270c