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B-4 Specifications
Keyboard
Membrane 86 keys with country-specific QWERTY-key layout
! Function keys — 12 keys
! Cursor Control keys — 8 keys; arrow keys arranged in inverted T layout
! Numeric keypad — embedded
! Fn key — function key for ROM-based key functions
! Stroke — 2.5 mm
! Height — 6 mm
! Pitch — 17.5 mm
External Floppy Diskette Drive
! Size — 3.5-inch
! Capacity — 1.44 MB
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(formatted), 2 MB
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(unformatted)
! Transfer Rate — 250 to 500 K/bps
! Number of tracks — 160
Hard Disk Drive
Specifications vary depending upon model:
! Busmaster IDE, Ultra DMA/33 support
! Capacity — Internal 10- or 20-GB
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! Drive height — 9.75 mm
! Read/write track-to-track seek rate — 3 ms
! Average seek time — 12 ms – 14 ms
! Revolutions per minute — 4200
! Data transfer rate
— 16.6 MB/sec (PIO mode4/DMA mode2)
— 66.6 MB/sec (ultra DMA mode 4)
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When referring to storage capacity, GB stands for one billion bytes and MB stands for one million bytes. Some
utilities may indicate varying storage capabilities. Total user-accessible capacity may vary depending on
operating environments.