About this item Charge phones and other mobile devices without any risk of hacking or uploading viruses from an untrusted USB socket. Connects between a USB-C socket and USB-C cable. Compatible with all USB-C devices; only compatible with iPhones and iPads if they use a USB-C cable for charging. Read the full description below if you're unsure. PortaPow Data Blockers are used globally by various organizations to secure their devices. Dimensions: 4.69 x 3.07 x 0.28 inches.