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Image Credit: Apple Inc.
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(Macworld, July 1994)
The PowerBook Duo 280 (left) and 280c (right) looked the
same as the Duo 250 and 270c, which they replaced. However,
a 68040 CPU made the 280 and 280c considerably faster
than previous models.
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Introduced: May 16, 1994
Terminated: January 27, 1996 |
Logic Board
Processor:
68LC040
Processor Speed:
33 MHz
- The clock input runs at 66 MHz;
however, the processor itself is clocked at 33 MHz,
so technically it is only a 33 MHz processor.
PMMU:
Integrated
FPU:
none
Bus Speed:
33 MHz
Data Path:
32-bit
ROM Size:
1 MB
Level 1 Cache:
8K
Level 2 Cache:
none
Expansion Slots:
Modem, dock
Battery:
Duo, NiMH Type III
Memory
RAM Type:
Duo
RAM Slots:
1
Min - Max RAM:
4 MB - 40 MB
Minimum RAM Speed:
70 ns
Install in groups of:
1
RAM Sizes:
4 - 36 MB
Onboard RAM:
4 MB
Image Credit: Apple Inc.
Image Credit: Apple Inc.
Ports
ADB:
none
USB:
none
FireWire:
none
Video:
none
Floppy:
none
SCSI:
none
Geoports:
none
Ethernet:
none
AirPort Ready:
No
Mic Type:
none
Other ports:
Printer
Image Credit: Apple Inc.
Image Credit: Apple Inc.
Video
Display:
- 8.4" Color active-matrix
(16-bit, thousands of colors) LCD
Resolution (built-in LCD):
- 640 x 400, 16-bit
- 640 x 480, 8-bit
Storage
Standard CD-ROM:
none
Internal Hard Drive:
SCSI (320 MB)
Floppy Disk Drive:
none
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Duo with external HDI-20 floppy disk drive connected with
Duo Floppy Adapter
(Apple Inc.)
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Operating System
Addressing Modes:
24-bit or 32-bit
Original OS:
7.1.1
Original Enabler:
PowerBook Duo Enabler v2.0
AppleTalk Version:
57.0.4
Image Credit: Apple Inc.
Compatible MacOS:
7.1.1
7.5
7.5.1
7.5.3
7.5.5
7.6
7.6.1
8.0
8.1
For additional information on
operating systems:
See this article
Miscellaneous
Codename:
Yeager
Form Factor:
PowerBook Duo
Dimensions (Inches):
1.5 H x 10.9 W x 8.5 D
Average Weight (lbs):
4.8
Gestalt ID:
103
Original Price:
$3700, $4750 US
Comments
The PowerBook Duo 280c, introduced on May 16, 1994, features a 33 MHz 68LC040
processor, 4 or 12 MB of RAM (expandable to 40 MB), and a 320 MB hard disk drive.
The Duo 280c is housed in a lightweight portable case with a sharp 8.4-inch color
active-matrix display. The Duo 280c can be used as a laptop computer or inserted
into a full-powered desktop system called the Duo Dock Plus. The Duo 280c has few ports and
no internal floppy or CD drive, but this can be expanded by using it with a Duo Dock
or with a compatible docking device like a MiniDock or Duo Floppy
Adapter.
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