Turning on the computer, fan noise, shutting down:
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Disc read, CD / DVD drive
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Input error sound, Pressing a keypad
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Jet printer
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Signal read information, Computer interface
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Franking machine
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Alarm, Computer interface
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Bios, Sound signal of a bios computer
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Turn on, turn off the old monitor
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Turn on, turn off the hard drive
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Disc read, Opens, closes the CD / DVD tray
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Computer keyboard
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Hard disk, write, read, room noise
★★★★★