Computer interface, signals:
- Computer mouse movement
- Removed, The USB flash drive is inserted
- Communication room, computer noise
- Computer interface, signals
- Floppy disk reading
- Turn off the old computer, Turn on
- Laser printer
- Old computer keyboard
- Office work, general noise
- Manual copy machine
- Franking machine
- Photocopy (photocopy)
★★★★★
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