By default, Dropbox only uses as much bandwidth as it can without interfering with your normal internet usage. It automatically limits itself to 75% of your maximum upload speed to prevent any noticeable slowdown in browsing. Downloads are performed at the fastest download speed available.
However, if it is taking up too much bandwidth or slowing down your internet connection, you can change the bandwidth settings on Dropbox.
1. Click the Dropbox item in your system tray�.
2. Click on the gear icon and select 'Preferences...'�
3. Click 'Bandwidth�'.
4. Adjust the settings manually by adjusting the number next to 'Limit to' under Download Rate or Upload Rate. The rates are set in kilobytes per second. These rates will apply to both your personal and work Dropboxes if you are signed into both.��
If you want the fastest rate possible, select 'Don't limit'. However, selecting 'Don't limit' or inputting a higher number than your connection is capable of will probably slow down the rest of your internet activity.
5. Click 'OK'. Your new download bandwidth settings will now apply.
This feature speeds up your syncing when the files are on your Local Area Network (LAN). It allows you to download files straight from other computers on the network, saving time and bandwidth compared to downloading them from Dropbox servers.
To use LAN sync, all computers need to be connected to the same LAN and the internet at the same time.
To enable LAN sync:
1. Click the Dropbox icon in your tray.
2. Click the gear icon and select 'Preferences…'
3. Click 'Bandwidth'.
4. Tick the box 'Enable LAN sync' and click 'OK'.