The USB flash drive is inserted, removed from the usb connector:
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Turn on, turn off the old computer
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Environmental sounds, Office work, typewriter
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Signal read information, Computer interface
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Opens, disc read, closes the CD / DVD tray
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Signals, Computer interface
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Repeatedly pressing a computer mouse
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Laser printer
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Sound signal of a bios computer, bios
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Photocopy (photocopy)
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Computer mouse movement
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Insert the disk into the drive, read the
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Franking machine
★★★★★