The data blocker hack protector between your USB cable and charger to block data transfer or syncing. Use usb 2.0 technology.Data Blocker into any standard USB port then plug your charging cable into the data block to safely charge your phone. ou can charge your mobile devices in public usb station, such as hotels, airports, cafes, offices, preventing data theft and malware attacks at the same time. 1 1/2"L x 1/2"W