Apple Macintosh PowerBook 540 vs Apple Macintosh PowerBook 540c

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Macintosh PowerBook 540 compared with Macintosh PowerBook 540c

	AppleMacintosh PowerBook 540	AppleMacintosh PowerBook 540c
Overview
Released
Released	May 1994	May 1994
Display
Screen size
Screen size	9.5″	9.5″
Resolution
Resolution	640 × 480	640 × 480
Touchscreen
Touchscreen	No	No
Display type
Display type	9.5-inch active-matrix greyscale LCD with 64 grey levels at 640 × 480	9.5-inch backlit active-matrix colour LCD; 256 colours at 640 × 480 or 32,768 colours at 640 × 400
Performance
Processor
Processor	Motorola 68LC040 66 MHz (PowerBook 540c)	Motorola 68LC040 66 MHz (PowerBook 540c)
CPU cores
CPU cores	1	1
Memory
Memory	4 MB	12 MB (better)
Storage
Storage	240 MB	320 MB to 500 MB (better)
CPU
CPU	Motorola 68LC040 with 66 MHz internal processor speed and 33 MHz bus interface; 8 KB L1 cache and no floating-point unit	Motorola 68LC040 running internally at 66 MHz with a 33 MHz bus; 8 KB L1 cache and no floating-point unit
Memory type
Memory type	4 MB on the logic board, expandable to 36 MB through one memory expansion slot	4 MB on the logic board, expandable to 36 MB; Apple's Japanese configurations supplied 12 MB
Storage type
Storage type	240 MB internal SCSI hard drive and Apple SuperDrive floppy drive	Internal SCSI hard drive and 1.4 MB Apple SuperDrive floppy drive; Apple lists 240–500 MB in English support and 320/500 MB Japanese configurations
Battery and size
Battery life (maker's claim)
Battery life (maker's claim)	Up to 3 hours	Up to 3 hours
Weight
Weight	3.2 kg (better)	3.3 kg
Thickness
Thickness	58 mm	57 mm (better)
Width × depth
Width × depth	292 × 246 mm	292 × 245 mm
Battery life detail
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	Two removable nickel-metal hydride intelligent batteries were supplied in Japan; Apple claimed three hours per battery. Published 3.3 kg weight includes both batteries.
Connections
Operating system
Operating system	macOS	macOS
Port detail
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	ADB, RS-422 serial/LocalTalk, HDI-30 SCSI, AAUI Ethernet, mini-15 video and stereo audio input/output; an optional PCMCIA module supported two Type II or one Type III card
External displays
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	Built-in video output supports mirroring or an extended desktop with an optional Apple video adapter cable
Trackpad
Trackpad	Built-in solid-state trackpad	Built-in solid-state trackpad in place of a trackball
Speakers
Speakers	Two built-in speakers and microphone with 16-bit stereo sound	Two built-in stereo speakers and a microphone
In the box
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	Apple's Japanese 12 MB/320 MB configuration included two batteries, power adapter and PowerBook Mobility Bundle software