This CF adapter forms an array when you insert two for microsd card into the adapter. Meaning that it splits data evenly across two TF card, and provides no fault tolerance or redundancy, the failure of one card will cause the entire array to fail that result in total data loss. | When you are going to read photos or data, please insert the CF adapter to card reader instead of a separated for microsd.

QUMOX Vertical Power Battery Grip/Holder for 2X LP-E17 Battery can hold one or two LP-E17 Li-Ion batteries - effectively doubles the recording capacity and extends the recording time. (Battery not included) | It can be used as an additional power source for the camera. | It provides enhanced flexibility and not only helps to keep your hand in vertical and horizontal position, but also provides a stable platform for taking portraits, still life shots and other subjects that require a vertical format | There is power on/off swithch | With a 1/4 "screw hole in the bottom, it can easily be attached to the tripod.