Macintosh PowerBook Duo 250

Introduced: October 1993
Terminated: May 1994


The Macintosh PowerBook Duo 250 had a 33MHz 68030 processor and between four and 32 MB of RAM.  The biggest improvement that it offered over other Duos was that it had a four-bit active matrix screen.


The next in the PowerBook Duo line, the Duo 250 offered a new active-matrix screen along with its ability to run a color desktop.


Processor: Motorola 68030
Processor Speed: 33 MHz
Coprocessor: None
Cache: 0.5k L1
System Bus: 33 MHz
Hard Drive: 120 or 200 MB
Media: None
Weight and Dimensions (US): 4.2 lbs., 1.4” H x 10.9” W x 8.5” D
Weight and Dimensions (Metric): 1.9 kg, 3.6 cm H x 27.7 cm W x 21.6 cm D
Original Mac OS: System 7.1 (PowerBook Duo Enabler v1.0)
Maximum Mac OS: Mac OS 7.6.1
Firmware: Macintosh ROM
Logicboard RAM: 4 MB
Maximum RAM: 24 MB
Type of RAM Slots: 1 - Duo
Minimum RAM Speed: 70 ns
Interleaving Support: No
Graphics Card: None
Graphics Memory: None
Built-in Display: 9” active-matrix 16-level grayscale LCD
Resolutions: 640 x 400
Display Connection: None
Expansion Slots: Modem, Dock (152-pin PDS)
Expansion Bays:—
Hard Drive Bus: SCSI
Backup Battery:—
Power Adapter:—
System Battery: PowerBook Duo Type II (NiMH)
Max Watts: 25 W
Ethernet: None
Infrared: None
Modem: Internal modem/fax card
ADB: None
Serial: 1
USB: None
FireWire: None
Audio In: 1 - 3.5-mm analog input jack, 1 - Built-in microphone
Audio Out: 1 - 3.5-mm analog output jack, 1 - Built-in speaker


The PowerBook Duo 250 was introduced in October 1993 and discontinued in May of 1994.



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