The keyboard is very good and fully meets my expectations. I have a Kindle Fire HDX (3rd generation) and was looking for a keyboard that fits in size. I bought the PEDEA Tablet Case 10.1 inch (25,9cm) and the EC Technology 18.000mAh ultrathin power bank to since I am secretary of a club and so the logs can be the same type with. It all fits together very well. The one with the tabs on the keyboard works very well although I usually in his origami envelope dahiner put my Fire. Other devices I have not tried using the keyboard. My conclusion: For my purposes, this keyboard is sufficient. That was a good buy.