Joyroom Attention! For charging/data transfer, the first device (phone, tablet) must be equipped with USB-Type C, and the second device (charger, computer) must have a USB port. Recommended for most mobile devices with USB Type-C ports. Optimized connector design for easy insertion into devices. Provides data transfer and charging functionality with a maximum output amperage of 2.1A. Flat cable design prevents tangling. Data Cable