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Mac Systems: Apple: Macintosh PowerBook: PowerBook 520 Specs | Ports
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The Apple Macintosh PowerBook 520 features a 25 MHz 68LC040 processor, 4 MB or 12 MB of RAM, a 160 MB or 240 MB hard drive, and support for multiple batteries in a sleek portable case with a 9.5" grayscale passive-matrix display. The PowerBook 500 series was the first line of PowerBooks to have a "trackpad" where the cursor followed the movement of your finger. The trackpad was a revolutionary input device, and has been used since in the vast majority of modern laptops.
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| Introduction Date: | May 16, 1994 | Discontinued Date: | June 10, 1995 |
| Processor Type: | 68LC040 | Processor Speed: | 25 MHz 1. |
| Processor Upgrade: | N/A 2. | FPU: | N/A |
| System Bus Speed: | 25 MHz | Lookaside Bus Speed: | N/A |
| ROM Size: | 2 MB | Data Path: | 32-bit |
| Level 1 Cache: | 8k | Level 2 Cache: | N/A |
| RAM Type: | 70 ns DRAM card | VRAM Type: | Built-in |
| Standard RAM: | 4 MB, 12 MB | Maximum RAM: | 36 MB |
| Motherboard RAM: | 4 MB | RAM Slots: | 1 (PB 500 series) |
| Standard VRAM: | 512k 3. | Maximum VRAM: | 512k 3. |
| Standard Hard Drive: | 160 MB, 240 MB | Int. Hard Drive Type: | SCSI |
| Standard CD-ROM: | N/A | Standard Disk: | 1.44 MB (manual) |
| Standard Modem: | 14.4k (optional) | Standard Ethernet: | AAUI-15 |
| Case Type: | Portable (Gray) | Form Factor: | PowerBook 520 |
| Exp. Slots: | Modem | Exp. Bays (Free): | None |
| Battery Type: | PB 500 Series NiMH | Battery Life: | 3.0-4.0 hours |
| Built-in Display: | 9.5" Grayscale 4. | Supported MacOS: | 7.1.1-8.1 |
| Dimensions: | 2.3 x 11.5 x 9.7 5. | Avg. Weight: | 6.3 lbs. |
| Original Price: | $2250, $2400 US | Est. Current Price: | N/A |
| Notes: |
1.
This model is somtimes designated as having a 50 MHz
processor,since
the clock input runs at 50 MHz. However, the processor
itselfis
not "clock doubled", so technically it is only a 25 MHz
processor. 2. Upgrades and accelerators are available. 3. 512k of VRAM supports an external color monitor (8-bit, 256 colors). 4. 9.5" Grayscale FSTN passive-matrix (4-bit, 16 grays) LCD display. 5. In inches, height x width x depth (while closed). 6. Photo Credit: Apple Computer, Inc. |
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