Opens, closes the CD / DVD tray:
-
Signals, Computer interface
-
Computer simulated laser
-
Opens, disc read, closes the CD / DVD tray
-
Jet printer
-
Repeatedly pressing a computer mouse
-
Modem connection, interference, signal
-
Computer mouse click
-
Turning on the laptop, shutting, fan noise
-
Laser printer
-
Turn on, turn off the hard drive
-
General noise, Office work
-
Matrix printer
★★★★★