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Image Credit: Apple, Inc.
Introduced: May 16, 1994
Logic Board Processor: 68LC040 Processor Speed: 25 MHz
The clock input runs at 50 MHz; however, the processor itself is clocked at 25 MHz, so technically it is only a 25 MHz processor.
PMMU: Integrated FPU: none Bus Speed: 25 MHz Data Path: 32-bit ROM Size: 2 MB Level 1 Cache: 8K Level 2 Cache: none Expansion Slots: Modem Battery: PB500, NiMH Memory RAM Type: PB5xx RAM Slots: 1 Min - Max RAM: 4 MB - 36 MB Minimum RAM Speed: 70 ns Install in groups of: 1 RAM Sizes: 4, 8, 12, 20, 32 MB Onboard RAM: 4 MB
Image Credit: Macworld, July 1994
Ports ADB: 1 USB: none FireWire: none Video: mini-15 Floppy: none SCSI: HDI-30 Geoports: none Ethernet: AAUI-15 AirPort Ready: No Mic Type: Line in Other ports: Printer, speaker
Image Credit: Apple, Inc.
Image Credit: Apple, Inc.
(Click) 1994 Apple Computer
Video Display:
9.5" Grayscale FSTN passive-matrix (4-bit, 16 grays) LCD
Resolution (built-in LCD):
Resolution External Only (512K VRAM):
512 x 384, 8-bit 640 x 480, 8-bit 800 x 600, 8-bit 832 x 624, 8-bit
Storage Standard CD-ROM: none Internal Hard Drive: SCSI (160 - 240 MB) Floppy Disk Drive: 1.44 MB manual Operating System Addressing Modes: 32-bit Original OS: 7.1.1 Original Enabler: PowerBook 500 Series Enabler AppleTalk Version: 57.0.4 Compatible MacOS: 7.1.1
(Macworld, July 94 ) The 500-series PowerBooks offered a full size keyboard for typing. There was also a row of function keys as well as escape and power-on keys along the top row. Missing were page up and page down keys.
Miscellaneous Codename: BlackBird LC Form Factor: PowerBook 520 Dimensions (Inches): 2.3 H x 11.5 W x 9.7 D Average Weight (lbs): 6.3 Gestalt ID: 72 Original Price: $2250, $2400 US
(Click) Apple Dealer Spec Sheets
Manuals at Apple.com: PowerBook 520 PowerBook PowerPC Upgrade Guide PowerBook 520 Getting Started PowerBook 520 User's Guide
