Is there a U3 version of SyncBack?
Support for U3 was dropped in V6 (as the U3 standard itself has been discontinued by its creators). However, there is a V5 version that can be used with U3. The U3 version of SyncBackPro V5 is available for download here:
The U3 version of SyncBackSE V5 is available for download here:
There is no U3 version of SyncBackFree.
Important: The U3 versions of SyncBackSE and SyncBackPro have not been officially certified and are not supported.