1. The sd/tf card reader 4 is 1: 1 sd card slot, 1 micro sd card (tf) slot, 1 lightning charging port, 1 lightning charging port, 1 usb 3.0 female. 2. Plug and Play: no app required, you can download photos and videos directly from the SD card to your iPhone or iPad, without using any device, you can share your photos and videos with family and friends anytime and anywhere. In addition, the adapter is equipped with a lighting charging interface, so there is no need to worry about insufficient power when streaming videos. 3. Non-compatible devices: barcode scanners, mobile hard drives, sound cards (sound), dac devices, printers, webcams, headphones with microphone can only listen to music and cannot use the microphone to make calls (the adapter has no voice function) . 4. It does not support connecting SD card and TF card at the same time, because iPhone and iPad does not support connecting 2 external devices at the same time. 5. Fast data transfer speed: transfer videos and photos from camera or memory card to your iPhone/iPad with a speed of 14MB 16MB/s, and support SD/TF card up to 64GB. The iPhone/iPad memory card reader supports JPER photo formats, as well as RAW, SD and HD video formats, including H.264 and MPEG-4.