Computer

The PowerBook Duo 210 was the first dockable Mac. By eliminating the internal floppy drive (as Apple had done with the PowerBook 100 ) along with other size- and weight-saving measures, Apple got it down to 4.2 pounds.

Because of its design, PowerBook Duos cannot use a floppy drive, external hard drive or other SCSI device, connect to an external display, or be used on a network without a dock.

The Duo sports a 4-bit passive-matrix screen similar to the 6.8 lb. PowerBook 160 .

Specs (via Low End Mac)

• Cpu: 25 MHz 68030
• Fpu: optional 68882 in dock
• Performance: 3.8, relative to SE; 0.43, Speedometer 4
• Ram: 4 MB, expandable to 24 MB using a single Duo RAM card
• Rom: 1 MB
• Hard Drive: 80 MB
• Display: 9″ 640 x 400 84 ppi 4-bit passive matrix
• Gestalt Id: 29
• Upgrade Path: Duo 280
• Weight: 4.2 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 210