PowerBook Duo 2300c

The PowerBook Duo 2300c was Apple’s only PowerBook Duo based on a PowerPC CPU. To make the 2300c compatible with Duo Docks for earlier models, the 100 MHz 64-bit PowerPC 603e CPU was used on a 33 MHz 32-bit bus, which seriously compromised performance.

PowerBook Duo 2300c

The 9.5″ 640 x 480 display normally runs in 8-bit/256-color mode, but by switching to 640 x 400 resolution it support 16-bit color.

The 2300c marked the end of the PowerBook Duo line.


According to the Road Warrior and Other World Computing, the drive controller in pre-G4 PowerBooks is incompatible with ATA-6/Ultra ATA-100 hard drives.


  • Code name: AJ
  • introduced 1995.08.28; discontinued 1997.02.01
  • requires System 7.5.2 through Mac OS 9.1
  • CPU: 100 MHz PPC 603e
  • Performance: unknown
  • RAM: 8 or 20 MB, expandable to 56 MB
  • ROM: 2 MB
  • Hard drive: 750 MB or 1.1 GB
  • display: 640 x 480 9.5″ 85 ppi active matrix with 8-bit color (16-bit color at 640 x 400)
  • ADB port: only with dock
  • SCSI port: HDI30 connector on dock
  • serial: 1 DIN-8 RS-422 port on back of computer
  • proprietary modem slot
  • Gestalt ID: 118
  • Size (HxWxD): 1.5″ x 10.9″ x 8.5″
  • Weight: 4.8 pounds
  • power supply: M4174

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