Note 1:Support iOS 13 or higher, 200mA does not charge, support 500mA after connecting the charging cable)Widely compatible: electric piano, guitar, MIDI keyboard, microphone, sound card, U disk, SD card, TF card, digital camera. Or other USB devices less than 200mA. (Do not connect the hard disk)Note 2: If your iPad uses iOS 13 or later, you can only import photos and videos from a USB flash drive to your phone. The photos and videos should be taken from a digital camera and saved under the "DCIM" folder. Does not support exporting photos to U disk. If your phone is iOS 13, you can transfer most files (for example: photos, videos, text, excel, ppt, etc.) to each other. Please make sure your USB flash drive format is FAT32 / exFAT.Note 3: Our products are only responsible for connection. There are too many USB electronic devices around the world. If the iOS system is not compatible, our adapter will not work. Do not use it for hard drives. The lightning port is only for charging, not for listening to music.Note 4:1. The Lightning Digital AV Adapter supports mirroring the content displayed on the device screen (including applications, presentations, websites, slides, etc.) to a TV, monitor, projector or other compatible monitor (up to 1080P HD) that supports HDMI.2. It can also output video content movies, TV shows, and captured videos to a large screen with a resolution of up to 1080P HD. Just connect the Lightning Digital AV adapter to the Lightning interface on the device, and then connect it to the TV or projector via the HDMI cable.3. Suitable for family entertainment, training, business meetings, exhibitions, etc.