Apple Macintosh PowerBook 140

powerbook 140Intended as a replacement for the Macintosh Portable, the 140 series was identical to the Powerbook 170, though it lacked a number of the high-end model’s features to make it a more affordable mid-range option. The most apparent difference was that the 140 used a cheaper, 10 in (25 cm) diagonal passive matrix display instead of the sharper active matrix version used on the 170. Internally, in addition to a slower 16 MHz processor, the 140 also lacked a Floating Point Unit (FPU) and could not be upgraded. It also came standard with a 20 MB hard drive compared with the 170′s 40 MB drive.


The Apple Macintosh PowerBook 140 features a 16 MHz 68030 processor with 0.5k of level 1 cache. It lacked an FPU which meant that mathematical processes took longer to complete.


Incorportated in the Powerbook 140 was either 4MB or 6MB of ram comprising 2MB soldered direct to the motherboard and either a 2 MB or 4MB PSRAM card. The Powerbook incorporated a single memory slot that accepts a 6 MB memory module once the existing module has been removed.


The Powerbook incorporated either a 20 MB or a 40 MB SCSI hard drive.  The hard drive could be technically upgraded but sourcing a SCSI laptop hard drive proved difficult for many.

Video & Graphics:

Incorporated into the Powerbook 140 was a 9.8″ monochrome passive-matrix (1-bit) Supertwist LCD.  It offered a native resolution of 640×400.  Controlled by dedicated VRAM it offered no upgrade path and had no external video connector.

Ports & Connectivity:

This Powerbook features dual Serial ports, 8 bit mono sound output, omni directional sound input microphone, an ADB port and an HDI-30 SCSI port. It is able, via the HDI-30 port to the rear, to connect to up to 6 external SCSI peripherals. This Powerbook does support SCSI Disk mode.

Introduction Date: October 21, 1991 Discontinued Date: August 3, 1992
Processor Speed: 16 MHz Processor Type: 68030
Processor Upgrade: Soldered FPU: None
System Bus Speed: 16 MHz Cache Bus Speed: N/A
ROM/Firmware Type: Macintosh ROM ROM/Firmware Size: 1 MB
L1 Cache: 0.5k L2 Cache: N/A
RAM Type: PSRAM Card Min. RAM Speed: 100 ns
Standard RAM: 2 MB, 4 MB Maximum RAM: 8 MB
Motherboard RAM: 2 MB RAM Slots: 1
Video Card: Dedicated VRAM Type: Onboard
Standard VRAM: N/A Maximum VRAM: N/A
Built-in Display: 9.8″ Monochrome Native Resolution: 640×400
Standard Hard Drive: 20 MB, 40 MB Int. HD Interface: SCSI
Standard Optical: None Standard Disk: 1.44 MB (Auto)
Standard Modem: None Standard Ethernet: None
Expansion Slots: Modem Expansion Bays: None
Details: N/A
Case Type: Notebook Form Factor: PowerBook 140
Apple Order No: M0511LL/A Apple Subfamily: PowerBook 140/170
Apple Model No: M5416 Gestalt ID: 25
Battery Type: NiCad Battery Life: 2-3 Hours
Original Mac OS: 7.0.1 Supported Mac OS: 7.0.1-7.5.1, 7.5.3-7.5.5
Dimensions: 2.25 x 11.25 x 9.3 Avg. Weight: 6.8 lbs (3.1 kg)