Apple · PowerBook

Macintosh PowerBook 540

Released May 1994

The PowerBook 540 combines an active-matrix greyscale screen, a trackpad and built-in Ethernet in Apple's 500-series notebook design.

Specifications

Screen size: 9.5″
Resolution: 640 × 480
Touchscreen: No
Display type: 9.5-inch active-matrix greyscale LCD with 64 grey levels at 640 × 480

Processor: Motorola 68LC040 66 MHz (PowerBook 540c)
CPU cores: 1
Memory: 4 MB
Storage: 240 MB
CPU: Motorola 68LC040 with 66 MHz internal processor speed and 33 MHz bus interface; 8 KB L1 cache and no floating-point unit
Memory type: 4 MB on the logic board, expandable to 36 MB through one memory expansion slot
Storage type: 240 MB internal SCSI hard drive and Apple SuperDrive floppy drive

Battery life (maker's claim): Up to 3 hours
Weight: 3.2 kg
Thickness: 58 mm
Width × depth: 292 × 246 mm
Battery life detail: Two high-capacity Type II nickel-metal hydride batteries supplied; Apple claims 1.5–3 hours on one battery or 3–6 hours on two

Operating system: macOS
Port detail: ADB, serial/LocalTalk, AAUI Ethernet, HDI-30 SCSI, external video, stereo sound input/output and power input; optional internal modem and processor-direct PCMCIA expansion module
External displays: Video output supports compatible external Apple displays through an adapter; built-in greyscale display can be upgraded to active-matrix colour with Apple's optional upgrade
Trackpad: Built-in solid-state trackpad
Speakers: Two built-in speakers and microphone with 16-bit stereo sound
In the box: Notebook, two batteries and power adapter; preinstalled PowerBook Mobility Bundle. Dimensions and metric weight come from Apple's October 1994 Apple Facts

Processor	Memory	Storage
Motorola 68LC040 66 MHz (PowerBook 540c)	4 MB	240 MB

Model	Size	Display	Processor	Memory	Weight	Battery	Released
AppleMacintosh PowerBook 540c	9.5″	–	Motorola 68LC040 66 MHz (PowerBook 540c)	12 MB	3.3 kg	3 h	May 1994
AppleMacintosh PowerBook 520	9.5″	–	Motorola 68LC040 50 MHz (PowerBook 520)	12 MB	2.9 kg	3.5 h	May 1994
AppleMacintosh PowerBook 520c	9.5″	–	Motorola 68LC040 50 MHz (PowerBook 520)	12 MB	2.9 kg	3 h	May 1994