NEC VERSA LX Service And Reference Manual page 115

Keyboard
Membrane 85 keys (both U.S. and International) with standard QWERTY-key
layout (International keyboards are country-specific)
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Function keys — 12 keys
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Cursor Control keys — 4 keys; arrow keys arranged in inverted T layout
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Numeric keypad — embedded
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Fn key — function key for ROM-based key functions
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Stroke — 3 mm
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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Transfer Rate — 250 to 500 K/bps
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Interleave 1:1
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Controller — NS PC87338VJG (non-AGP) or NS PC97338VJG (AGP)
SuperDisk™ Drive
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Formatted Capacity:
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Data Transfer Rate
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Track to track seek rate
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9-4 Specifications
Optical diskette — 120 MB
High Density floppy diskette — 1.44 MB
Double Density floppy diskette — 720 KB
120-MB: 680 KB/S (max)
1.44-MB: 150 KB/S (max)
720-KB: 75 KB/S (max)
120-MB: 20ms (typ)
1.44-MB/720-KB: 25ms (typ)