[Mouse and Keyboard Use Mode]: iOS 13 added mouse usb function, the USB mouse connets to the device through the adapter, then click device:Setting-Accessibility-Touch-Assist Touch-ON. When we move the mouse, the dots in the device will also move, which means we can use it. | [Data Bidirectional Transmission Mode]:In iOS 13 system, through the "file" app, we are allowed browse and transfer data in two-direction. | [LIGHTING TO CAMERA CONNECTION KIT 4 IN 1]1 * SD Card port (SD / SDXC / SDHC / RS-MMC / MMC Micro Card), 1 * Micro SD / T-Flash Card port (Micro SDXC / Micro SDHC / Micro SD Card), 1 * USB port(USB3.0), 1 * Female Lightn-ing 8 pin charging port. | [FAST SPEED CAMERA CARD READER ADAPTER] Transfer the photos or videos to your phone from camera or memory card with the speed of 12MB~16MB/S, Making it much easier to share photos and videos with your families or friends anytime, anywhere. Support standard photo formats, such as JPEG and RAW and HEIF/HEVC etc. | [TOTALLY PLUG AND PLAY] No App required, iOS 13 supported. And with the lightning charging port, you will never worry about the power shortage when transferring photos and videos.