Apple Macintosh PowerBook 520 vs Apple Macintosh PowerBook 540c

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Macintosh PowerBook 520 compared with Macintosh PowerBook 540c

	AppleMacintosh PowerBook 520	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 FSTN passive-matrix greyscale LCD with 16 shades of grey	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	320 MB to 500 MB (better)
CPU
CPU	Motorola 68LC040 running internally at 50 MHz with a 25 MHz bus; 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; Apple's Japanese configurations supplied 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; Apple lists 160–240 MB drives in its English support sheet and 240/320 MB Japanese configurations	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 3.5 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	Removable nickel-metal hydride intelligent battery; Apple claimed 3.5 hours per battery, with room for a second 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, 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	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	Built-in video output supports mirroring or an extended desktop with an optional Apple 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 in place of a trackball	Built-in solid-state trackpad in place of a trackball
Speakers
Speakers	Two built-in stereo speakers and a microphone	Two built-in stereo speakers and a microphone
In the box
In the box	Apple's Japanese 12 MB/240 MB configuration included one battery, power adapter and PowerBook Mobility Bundle software	Apple's Japanese 12 MB/320 MB configuration included two batteries, power adapter and PowerBook Mobility Bundle software