CD / DVD drive, disc read:
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Computer mouse movement
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Bios, Sound signal of a bios computer
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Computer simulated laser
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Pressing a keypad, input error sound
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Old computer keyboard
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Computer mouse click
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General noise, Office work
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Laser printer
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Read, room noise, Hard disk, write
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Turn off the hard drive, Turn on
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Floppy disk reading
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Removed, The USB flash drive is inserted
★★★★★