Apple Macintosh PowerBook 520c vs Apple Macintosh PowerBook 540c

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Macintosh PowerBook 520c compared with Macintosh PowerBook 540c

	AppleMacintosh PowerBook 520c	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 backlit dual-scan passive-matrix colour LCD with 256 colours	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 50 MHz (PowerBook 520)	Motorola 68LC040 66 MHz (PowerBook 540c)
CPU cores
CPU cores	1	1
Memory
Memory	12 MB	12 MB
Storage
Storage	240 MB to 320 MB	320 MB to 500 MB (better)
CPU
CPU	Motorola 68LC040 with 50 MHz internal processor speed and 25 MHz bus interface; 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; Apple's Japanese bundled configurations contain 12 MB	4 MB on the logic board, expandable to 36 MB; Apple's Japanese configurations supplied 12 MB
Storage type
Storage type	Internal SCSI hard drive and 1.4 MB Apple SuperDrive floppy drive; Japanese configurations pair 12 MB RAM with 240 or 320 MB storage. English support also lists a 160 MB 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	2.9 kg (better)	3.3 kg
Thickness
Thickness	57 mm	57 mm
Width × depth
Width × depth	292 × 245 mm	292 × 245 mm
Battery life detail
Battery life detail	Nickel-metal hydride intelligent battery; Japanese specification claims three hours per battery, with one supplied and room for two. April 1995 Apple Facts instead gives 2–4 hours on one battery and 4–7 hours on two; 2.9 kg includes one battery	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, RS-422 serial/LocalTalk, AAUI Ethernet, HDI-30 SCSI, stereo audio input/output, external video and power input; optional internal modem and PCMCIA module supporting two Type II or one Type III card	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	Mirroring and extended desktop through an optional video adapter cable	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 stereo speakers and a built-in microphone	Two built-in stereo speakers and a microphone
In the box
In the box	Japanese 12 MB/240 MB bundle includes one intelligent battery, power adapter, KanjiTalk 7.5 media and PowerBook Mobility Bundle; the 12 MB/320 MB bundle adds Express Modem II	Apple's Japanese 12 MB/320 MB configuration included two batteries, power adapter and PowerBook Mobility Bundle software