deal as a gift for security-conscious users, this USB data blocker is designed to physically block data transfer/syncing while charging - Attaches in between USB cable and the USB socket to physically block data transfer/syncing while charging - Designed to allow charging without risk of hacking/uploading of viruses - Automatically switches between Apple, Universal and Samsung standards to ensure compatibility with a device - SmartCharge supports charging upto 2.4A so the blocker won't slowdown charging and can improve charging speed in some cases