The wireless sync dongle is the small USB device that comes with most Fitbit trackers. The dongle allows your tracker and computer to communicate with one another.
When do I need to use the dongle?
If you only sync your tracker with a mobile device, you don't need the dongle. Some computers that can communicate with the tracker over Bluetooth also don't need the dongle. However, because a computer's Bluetooth signal can occasionally be weak or problematic, it's a good idea to keep the dongle nearby even if you usually sync without it.
The Bluetooth-equipped computers that don't generally require a dongle are:
- Macs with Fitbit Connect software installed
- Windows 10 PCs with the Fitbit app for Windows 10 installed
Which trackers don't come with a dongle?
Fitbit Blaze is not shipped with a dongle since most of its features are optimized for a mobile device. If you have a Windows PC without Bluetooth, you can sync Blaze using its charging cable. To sync Blaze with any other computer that lacks Bluetooth, you can buy a dongle on the Fitbit Store.
Fitbit Flex 2 and Fitbit Charge 2 don't ship with a dongle. Dongles are available for sale on the Fitbit Store.