NEC SX Service And Reference Manual page 95

Diskette Drive
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Size — 3.5-inch
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Capacity — 1.44 MB (formatted), 2 MB (unformatted)
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Access Time (average) — 94ms
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Transfer Rate — 250 to 500 K/bps
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Interleave 1:1
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Controller — NS PC87338VJG
VersaBay III SuperDisk™ Drive
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Formatted Capacity:
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Data Transfer Rate — 4 MB/sec
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Track to track seek rate — 3 ms
Hard Disk Drive
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Capacity — Internal 2.1-GB, 3.2-GB, 4-GB, or 6-GB 9.5 mm removable
IDE hard disk drive
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Track-to-track seek rate — 3 ms
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Average seek time — 13 ms (read), 14 ms (write)
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Revolutions per minute — 4200
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Data transfer rate — 16.6 MB/sec
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Media data rates — 69.8 bit/sec (max)
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Mean Time Between Failure (MTBF) — 300,000 hours
24X-speed CD-ROM Drive
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Type — 5-inch CD-ROM Pack
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Average Data Transfer Rates — 1500 KB/second (mode 1),
1710 KB/ second (mode2)
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Read Rate — 1650 KB/sec max, 1500 KB/sec avg
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Burst Transfer Rate — 11.1 MB/sec (PIO mode2);13.3 MB/sec /DMA
mode; PIO Mode 3 compatible (with IORDY)
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Average Access Time — 150 milliseconds (ms)
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Memory Buffer — 128 KB
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Interface — IDE (ATAPI)
9-4 Specifications
Optical diskette — 120 MB
High-Density floppy diskette — 1.44 MB
Double-Density floppy diskette — 720 KB