The device works well but the cable is too short and the Samsung refund is problematic.
The device itself works well, but the cable is too short as the fast USB sockets are at the back of the box.
Standard commercially available USB cables don't allow the maximum speed of 450 megabytes.
The 100 € refund from Samsung looks like a scam because the conditions for obtaining this refund are so complicated, in particular the barcode scan which is impossible to comply with (especially as you can no longer access the user manual once you've started to fill in the form).
LDLC should not be supporting this form of advertising.