Modem connection, signal, interference:
-
Computer keyboard
-
Matrix printer
-
Turn on, turn off the old monitor
-
Laser printer
-
Floppy disk reading
-
Manual copy machine
-
Read the, Insert the disk into the drive
-
Interference, Modem connection, signal
-
Fan noise, Turning on the laptop, shutting
-
Opening, closing the laptop cover
-
Closes the CD / DVD tray, Opens, disc read
-
Write, room noise, Hard disk, read
★★★★★