This USBC 3.5 mm headphone adapter combines charging, USB card reader, and audio output in a single compact unit. It lets you type faster on a phone or tablet by connecting a USB keyboard. Key benefits Allinone connectivity: charge your device, read USB cards, and output 3.5 mm audio from one adapter. Enhanced sound quality: builtin quality DAC chip improves audio performance. Dual compatibility on the go: the 3.5 mm port supports CTIA and OMTP configurations. Charge while listening: you can charge your phone while enjoying audio. Versatile workstation options: work with USB 3.0 keyboards and mice to transform a mobile hard drive into a complete workstation. Supports standard media formats: compatible with H.264, MPEG4, JPEG and RAW formats; fits all smartphones and tablets. Easy multiformat audio: supports standard photo/media formats, enabling straightforward multiformat sound playback. Use scenarios On the move: connect to your phone or tablet to read a USB card, charge while listening to music, and type faster with a connected keyboard. At the desk: pair a USB 3.0 keyboard and mouse and use a mobile hard drive to create a portable workstation for editing or data access. Media viewing and creation: work with H.264, MPEG4, JPEG and RAW formats on your device, while enjoying quality audio output.