PowerBook 2400c

The PowerBook 2400c was designed to replace the discontinued Duo series – particularly the 2300c – with something very small and light (just 4.4 lb./2.0 kg). Although the keyboard is slightly smaller than usual, those who have 2400s just love these small PowerBooks. And with its 8.5″ x 10.5″ dimensions, the 2400c had the smallest footprint of any Apple notebook to date (89.25 square inches vs. 93.5 for the PowerBook 100).

Powerbook 240c with floppyMemory expansion is limited to 112 MB, which can be extended by the use of RAM Doubler or Virtual Memory. Using a hard drive larger than 3 GB may preclude the use of SCSI Disk Mode, according to PowerBook Hard Drives: The Essential Upgrade.

Although the 2400c doesn’t natively support CardBus, it can be modified to support it.


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.

Powerbook 240c with floppyDetails

  • 2400c/180 introduced 1997.05.08; discontinued
    2400c/240 introduced 1998.04.07; discontinued
  • requires System 7.6 through 9.1
  • CPU: 180/240 MHz PPC 603e
  • Bus: 40 MHz
  • Performance: 294, MacBench 4
  • ROM: 4 MB
  • RAM: 16 MB, expandable to 112 MB
  • Level 2 cache: 256 KB
  • VRAM: 1 MB
  • display: 10.4″ 16-bit 800 x 600 96 ppi color dual-scan or active matrix
  • Video out: VGA port
  • Hard drive: 1.3 GB EIDE
  • CD-ROM: none
  • ADB: 1 port for keyboard and mouse
  • serial: 1 DIN-8 RS-422 port on back of computer
  • SCSI: HDI30 connector on back of computer
  • PC Card slots: 2 (CardBus compliant on the Japanese 2400c, and the US version can be modded to support CardBus.)
  • infrared: supports IrDA and Apple’s IRtalk protocol
  • gestalt: 307
  • size: 1.9″ x 10.5″ x 8.5″
  • Weight: 4.4 pounds with battery
  • power supply: M5937

Online Resources


  • From PowerBook 2400, 3400: Password Security and Mac OS 8.0: On PowerBook 2400 and 3400 systems, Password Security software is not compatible with Mac OS 8.0. Other PowerBook systems are not affected.
  • From Mac OS 8.1: Late Breaking Tips: Mac OS 8.1 will not install the Password Security control panel on a PowerBook 2400 or 3400 unless an earlier version already exists in the Control Panels folder. As noted above, Password Security is not compatible with these models under OS 8.0 or later and should not be used.

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