ZMA USB Data Blocker | Secure Fast Charging 3rd Gen Data Defender - Anti-Hacking Antivirus USB Data Blocker for iPhone, Smartphone Data Sync Blockers, Blocks Unwanted Data Transfer (2, Black)

I bought these to power my garmin satnav using a usb cable rather than the standard bulky cigarette power cable supplied with the satnav. Just using a standard usb cable usually causes the satnav to think it is connecting to a computer link but by adding this attachment it will operate as a power supply only.

Hopefully it does what bought for up to now seems to be working ok when used.

Blocks the data while chargingFast charging is supportedGood quality, small sizeNo more worries about virusesNo worries about data privacy and losing data when charging

Good quality product. Everything is working as expected

Product does the job.

Easy to use. Simple to understand and great