Jufjsfy Analog audio interface: 3.5mm headphone audio output Operating steps: 1. First, please use a USB cable to connect the AC adapter and Audiocast broadcast box, and plug the power adapter into the socket, finally connect the Audiocast box with speaker or amplifier by audio cable. 2. Download the "Audiocast" app (the iOS user can search for "audiocast" in. For user, it can search for "Audiocast" in any Apk market). 3. Please make sure your mobile is connected to the 2.4GHz network to, open the "Audiocast" software, click "Add device" according to the system prompt to enter the pass of your home router, and then the WPS key on . At the same time, remind "WiFi Connection Search" by the, after 10-15 seconds we complete the setup for the Audiocast streamer. Colour: black. Material: plastic. Size: 5.5 x 5.5 x 1.8 cm. Contents: 1 x Airplay receiver. 1 x 3.5mm Audio Cable 1 x USB cable. Only the above package, products are not included. Note: Due to lighting and different screen settings, the colour of the item slightly from the actual product. The allowed measurement error is +/- 1-3 cm.