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PowerBook 520
M4880 · 1994–1995 · laptop
Specifications
- Cpu
- Motorola 68LC040 25 MHz (50/25 MHz)
- Ram
- max: 36 MB (4 MB onboard plus one expansion card) · base: 4 MB
- Ports
- Serial (RS-422) · HDI-30 SCSI · ADB · Ethernet (AAUI) · Video out · PDS slot (modem/expansion)
- Battery
- NiMH, dual battery bays (one battery standard)
- Display
- 9.5" 640×480 passive matrix, 4-bit grayscale
- Storage
- base: 160 MB SCSI HDD · options: 240 MB SCSI HDD · 320 MB SCSI HDD
- Weight
- 2.9 kg
- Os Support
- latest: Mac OS 8.1 · shipped: System 7.1.1
- Release Price
- $2,269
Variants
Models
PowerBook 520c(Color dual-scan passive matrix version of the 520.)PowerBook 540(33 MHz 68LC040, grayscale active matrix.)PowerBook 540c(33 MHz 68LC040, color active matrix. The flagship, around $4,840 at launch.)
Upgrade paths
RAM
36 MB via one proprietary expansion card · Single slot; 500-series-specific modules.
MODERATECPU
PowerPC 603e 100 MHz upgrade card (Apple/Newer Technology) · Official daughtercard swap turned the 500 series into a PowerPC machine.
MODERATEstorage
Larger 2.5" SCSI drive or SCSI2SD solution · Standard 2.5" SCSI bay.
MODERATE