PowerBook Duo 210

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.

PowerBook Duo 210Because 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.


  • introduced 1992.10.19 at $2,250; discontinued October 1993
  • supports System 7.1 to Mac OS 8.1
  • 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
  • ADB port: only with dock
  • SCSI port: only with dock
  • serial ports: 1 DIN-8 RS-422 port on back of computer
  • proprietary modem slot
  • Gestalt ID: 29
  • Size (HxWxD): 1.4″ x 10.9″ x 8.5″
  • Weight: 4.2 pounds
  • upgrade path: Duo 280
  • power supply: M7783


Online Resources


  • Apple Computer considers this computer obsolete as of July 16, 2001 in the United States and July 23, 2001 in Canada. As of that date, service parts and documentation will no longer be available from Apple.
  • Modem port limited to 57.6 kbps (printer port may be faster); use of a 56k modem on the modem port may limit throughput. See 56k modem page.

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