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PowerBook Buyer's Guide
PowerBook 520
by Steve Hildreth
The 520 was the passive-matrix grayscale equivalent of the 520c. It was aimed at budget-conscious consumers who wanted to upgrade from their 100-series PowerBooks to a 500-series PowerBook, but just didn't have the cash to spring for the more expensive models. Its screen is okay for text and other basic applications, but it's not really suitable for graphics or games. That said, the grayscale screens are brighter at their maximum settings that the color displays. For the demanding road warrior who wants light weight and maximum time from the battery, the 520 is the way to go. At only 6.3 pounds, it is the lightest 500-series 'Book, and the battery lasts on average 15 percent longer than a battery in a color model. All 500-series PowerBooks are PowerPC upgradable.
Rating:
At the time: B
Ports:
1 serial
ADB
audio out
audio in
video out
Ethernet
internal modem
1 PDS slot
HDI-30 SCSI
Display:
Passive-matrix 16-level grayscale
9.5"
640x480 resolution
Weight: 6.3 pounds
Apple's Specifications:
| Logic Board |
Ports |
Power |
| Processor: |
68LC040, 50 MHz |
| PMMU: |
integrated |
| FPU: |
none |
| Data Path: |
32-bit, 25 MHz |
| L1 Cache: |
8K |
| L2 Cache: |
none |
| 2nd Processor: |
none |
| Slots: |
modem |
|
| ADB: |
1 |
| Video: |
mini-15 |
| Floppy: |
none |
| SCSI: |
HDI-30 |
| Geoports: |
none |
| Ethernet: |
AAUI-15 |
| FireWire: |
|
| Mic Type: |
Line in |
| Other Ports: |
Printer, Speaker,
|
|
| Max Watts: |
40 |
| Amps: |
1.0/1.5 |
| BTU per Hr: |
136.8 |
| Voltage: |
100-240 |
| Freq Range: |
50-60 Hz |
| Battery Type: |
PB500, NiMH |
| Soft Power: |
yes |
|
| Memory |
Video Memory |
| Logic Board: |
4 MB |
| RAM Slots: |
1, PB5xx |
| Min - Max RAM: |
4 MB - 36 MB |
| Min RAM Speed: |
70 ns |
| RAM Sizes: |
4, 8, 12, 20, 32 MB |
| Install in Groups of: |
1 |
|
| Resolution |
Video Memory
built-in LCD screen
(built in) |
Video Memory
512K VRAM (ext. only)
(built in) |
| 512 x 384 |
n/a-bit |
8-bit |
| 640 x 400 |
n/a-bit |
n/a-bit |
| 640 x 480 |
4-bit |
8-bit |
| 800 x 600 |
n/a-bit |
8-bit |
| 832 x 624 |
n/a-bit |
8-bit |
| 1024 x 768 |
n/a-bit |
n/a-bit |
| 1152 x 870 |
n/a-bit |
n/a-bit |
| 1280 x 1024 |
n/a-bit |
n/a-bit |
|
| Physical |
Software |
Storage |
| Introduced: |
5/16/1994 |
| Discontinued: |
6/10/1995 |
| Form Factor: |
PowerBook 520 |
| Gestalt ID: |
72 |
| Weight (lbs): |
6.3 |
| Dimensions (in): |
2.3 H x 11.5 W x 9.7 D |
|
|
|
| Addressing Modes: |
32-bit |
| Orig SSW: |
7.1.1 |
| Orig Enabler: |
PowerBook 500 Series Enabler |
| ROM ID: |
n/a |
| ROM Ver: |
n/a |
| ROM Size: |
2MB |
| AppleTalk Ver: |
57.0.4 |
Mac OS
Supported: |
7.1.1
7.5
7.5.1
7.5.3
7.5.5
7.6
7.6.1
8.0 |
|
| Floppy Size: |
1.44MB |
| Floppy Inject: |
manual |
| Min. Int HD Size: |
160-240MB |
| Int HD Interface: |
SCSI |
| Orig CD Speed |
n/a |
| Int CD Support: |
|
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