
AC Adaptor
| Item | Specification | |
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| Model name | LiteOn  | Delta 90W  | 
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| Input feature | 
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| Rated voltage | for 100Vac or 240Vac input AC | for 100Vac or 240Vac input AC | 
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 | voltage | voltage | 
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| Input voltage range | from 90Vac to 264Vac | from 90Vac to 265Vac | 
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| Rated frequency | for 50Hz or 60Hz | for 50Hz or 60Hz | 
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| Frequency range | from 47Hz to 63Hz | from 47Hz to 63Hz | 
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| Steady AC current | less than 1.5A rms at 100Vac input | less than 1.5A rms at 100Vac input | 
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 | and maximum load | and maximum load | 
| Output feature | 
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| Rated voltage | 19V | 19V | 
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| Voltage range | 18.05V to 20V | from 18.2V to 19.8V | 
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| Rated power | 90 W | 90 W | 
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| Output ripple and noise | less than  | less than  | 
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| Turn on delay time | within two seconds at 115 Vac input | within two seconds at 115 Vac input | 
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 | voltage | voltage | 
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| Temperature | Operating: 0 to 40oC | Operating: 0 to 40oC | 
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Hard Disk Drive
Seagate
| Model | ST9120821A | ST9100824A | ST98823A | ST96812A | 
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 | ST9120824A | ST9100825A | ST980829A | 
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| Drive Specification | 
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| Formatted | 120 | 100 | 80 | 60 | 
| Gbytes (512 | 
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| bytes/sector) | 
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| Physical read/ | 4 | 4 | 3 | 3 | 
| write head | 
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| Discs | 2 | 2 | 2 | 2 | 
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| Spindle Speed | 4200 (ST9120824A, ST9100825A, ST980829A) | 
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| (RPM) | 5400 (ST9120821A, ST9100824A, ST98823A, ST96812A) | 
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| Internal transfer | 56.25 (ST9120824A, ST9100825A, ST980829A) | 
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| rate (Mbytes/sec. | 48.25 (ST9120821A, ST9100824A, ST98823A, ST96812A) | 
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| max.) | 
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| I/O data transfer | 100 | 
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| rate (Mbytes/sec. | 
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| max.) | 
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| ATA data transfer | PIO modes  | |||
| mode supported | 
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| Bytes per sector | 512 | 
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| Average latency | 5.6 | 
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| (msec) | 
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| Average seek, | 12.5 | 
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| read (msec. | 
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| typical) | 
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| Chapter 1 | 41 |