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PowerBook Buyer's Guide
PowerBook Duo 280
by Steve Hildreth
The Duo 280 is essentially equivalent to the 280c with the exception of its 9" active-matrix grayscale screen, smaller 240 MB hard drive, and extremely light weight. At 4.2 pounds, this is one of the lightest Macs you can get. If you can live without color while on the road, a PowerPC-upgraded 280 is a powerful, extremely lightweight laptop. While docked, the 280 can power a 21 inch monitor with 256 colors and a 16 inch monitor with 32,000 colors. While only 0.1-0.2 pounds lighter than the newer 2400c, the 280 can be had for far less cash on the used market, while still providing PowerPC performance (assuming that it's been upgraded!).
Rating
At the time: B
Ports
1 serial
internal modem
processor direct slot (PDS) for dock or floppy drive
Display
Active-matrix 16-level grayscale
9"
640x400 resolution
Weight
4.2 pounds
Apple's Specifications:
| Logic Board |
Ports |
Power |
| Processor: |
68LC040, 66 MHz |
| PMMU: |
integrated |
| FPU: |
none |
| Data Path: |
32-bit, 33 MHz |
| L1 Cache: |
8K |
| L2 Cache: |
none |
| 2nd Processor: |
none |
| Slots: |
modem, dock |
|
| ADB: |
none |
| Video: |
none |
| Floppy: |
none |
| SCSI: |
none |
| Geoports: |
none |
| Ethernet: |
none |
| FireWire: |
|
| Mic Type: |
none |
| Other Ports: |
Printer, |
|
| Max Watts: |
25 |
| Amps: |
1.04 |
| BTU per Hr: |
85.5 |
| Voltage: |
100-240 |
| Freq Range: |
50-60 Hz |
| Battery Type: |
Duo, NiMH Type III |
| Soft Power: |
yes |
|
| Memory |
Video Memory |
| Logic Board: |
4 MB |
| RAM Slots: |
1, Duo |
| Min - Max RAM: |
4 MB - 40 MB |
| Min RAM Speed: |
70 ns |
| RAM Sizes: |
4-36 MB |
| Install in Groups of: |
1 |
|
| Resolution |
Video Memory
built-in LCD screen
(built in) |
| 512 x 384 |
n/a-bit |
| 640 x 400 |
4-bit |
| 640 x 480 |
n/a-bit |
| 800 x 600 |
n/a-bit |
| 832 x 624 |
n/a-bit |
| 1024 x 768 |
n/a-bit |
| 1152 x 870 |
n/a-bit |
| 1280 x 1024 |
n/a-bit |
|
| Physical |
Software |
Storage |
| Introduced: |
5/16/1994 |
| Discontinued: |
11/14/1994 |
| Form Factor: |
PowerBook Duo |
| Gestalt ID: |
102 |
| Weight (lbs): |
4.2 |
| Dimensions (in): |
1.4 H x 10.9 W x 8.5 D |
|
|
|
| Addressing Modes: |
24-, 32-bit |
| Orig SSW: |
7.1.1 |
| Orig Enabler: |
PowerBook Duo Enabler v2.0 |
| ROM ID: |
$067C |
| ROM Ver: |
n/a |
| ROM Size: |
1MB |
| AppleTalk Ver: |
57.0.4 |
Mac OS
Supported: |
7.1.1
7.5
7.5.1
7.5.3
7.5.5
7.6
7.6.1
8.0 |
|
| Floppy Size: |
none |
| Floppy Inject: |
n/a |
| Min. Int HD Size: |
240MB |
| Int HD Interface: |
SCSI |
| Orig CD Speed |
n/a |
| Int CD Support: |
|
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