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Apple PowerBook 145b Specs

All PowerBook Models | All 1993 Models | Dynamically Compare This Mac to Others

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Apple PowerBook 145bThe Apple Macintosh PowerBook 145b features a 25 MHz 68030 processor, 4 MB of RAM, either a 40 MB or 80 MB hard drive, and an internal 1.44 MB floppy drive in a compact portable case with a 9.8" monochrome passive-matrix display.

The PowerBook 145b is quite similar to the PowerBook 145 it replaced, but the 145b was "re-designed" to lower production costs and had 4 MB of onboard RAM rather than 2 MB.

To purchase or upgrade a vintage Mac -- and newer Macs -- see site sponsor OHS.

  • Tech Specs
  • Ports

Click on the category for related details. The most commonly needed info is "open" by default, but all info is important.

June 7, 1993 July 18, 1994
Details: The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended.

Also see: All Macs introduced in 1993.
25 MHz 68030
Details: This model has a 32-bit processor and a 32-bit data path.
Soldered None
Details: N/A
25 MHz N/A
Details: N/A
Macintosh ROM 1 MB
Details: N/A
0.5k N/A
Details: N/A
PSRAM Card* 100 ns
Details: *Supports a single 70-pin 100 ns PSRAM card.
4 MB 8 MB*
Details: *With 4 MB of onboard memory and a 4 MB memory module. 6 MB memory modules are not supported.

Also see: Actual Max RAM of All G3 & Later Macs.
4 MB 1*
Details: *One PowerBook 100 series 70-pin memory slot.
Dedicated* Onboard
Details: *Video function provided by onboard VRAM.
Details: The video cannot be upgraded.
9.8" Monochrome 640x400
Details: 9.8" monochrome passive-matrix (1-bit) Supertwist LCD.
Details: N/A
40 MB, 80 MB SCSI
Details: *By default, this model was configured with either a 40 MB or an 80 MB hard drive.
None 1.44 MB (Manual)
Details: N/A
None* None
Details: *Optional 2400 baud internal modem offered (M0970LL/A).
Modem None
Details: N/A
Notebook PowerBook 140
Details: N/A
M1592LL/A* PowerBook 145b
Details: *M1592LL/A refers to the configuration with a 40 MB hard drive whereas M4855LL/A refers to the configuration with an 80 MB hard drive.
M5409 54
Details: Please note that these identifiers refer to more than one model.

Also see: All Macs with the M5409 Model Number and 54 Gestalt ID.

For more about identifiers and how to locate them on modern Macs, please refer to's Mac Identification section.
NiCad 2-3 Hours
Details: N/A
7.1 7.1-7.5.1, 7.5.3-7.5.5
Details: Earlier and later versions of the Macintosh System/Finder and Mac OS are not supported.

For systems capable of running older versions of the Mac OS -- as well as modern ones -- please see site sponsor OHS. OHS specializes in heavily upgraded Macs capable of running both Mac OS X and Mac OS 9 applications.
2.25 x 11.25 x 9.3 6.8 lbs (3.1 kg)
Details: In inches while closed - height by width by depth, (5.7 cm, 28.6 cm, 23.6 cm).
US$1150, $2150, $2350 N/A*
Details: *As a collector's item, it still may retain value.

Photo Credit: Apple Computer, Inc.

Click on a category for additional details. The most commonly needed info is "open" by default, but all info is important. The icons correspond with the icons for each port on the computer.

None None
Details: N/A
1 1 (HDI-30)
Details: N/A
2 None
Details: Serial ports are marked by printer and modem icons.
None* None
Details: *Optional 2400 baud internal modem offered (M0970LL/A).
None None
Details: N/A
1 (Omni) None
Details: N/A
1 (8-Bit Mono) None
Details: N/A
1 None
Details: N/A
N/A 1
Details: 110V-220V AC, 50-60 Hz Frequency, 17 Max Watts.

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