The kit allow you to import photos and video from a digital camera or directly insert the memory card into the card slot.
USB interface - Just plug it into the dock connector port on your iPad then attach your digital camera or iPhone using a USB cable (not included).
Card Reader - Support SD(HC), M2, TF (T-Flash) memory card - Connecting it to your iPad. Then insert the memory card of your digital camera into the slot to import photos. You don't need any adapter for M2 or TF memory card. Just insert it directly to the card reader is good enough.
Support standard photo formats such as JPEG or RAW etc.