Instruct: Classify the given Amazon review as either positive or negative.
Query: It saved my data already

I brought two of these with my Visor Deluxe and it has saved my data once already after the Visor's software hung on my and I had to do a hard reset.The module could not be easier to use - one click backup and restore.I was surprised though that backup and restore is "all or nothing" - you can't select what to backup or restore. That means it's really only useful in the case of complete system failure when you have to revert to a previous state.