The RAM-HOL-TABL19U consists of a spring loaded back plate, custom support cups and locking mechanism. This spring loaded design makes it easy to load and unload your tablet, along with keeping it secure while on the go. Cup ends are designed to optimize the functionality of your tablet, allowing access to audio jacks, usb, power, and other ports, your tablet can be used just as it was intended. Quickly lock the cradle, keeping your tablet secure and safe from theft. The included back plate is interchangeable with various size support cups, making it compatible with numerous tablet models. New detachable support cups are the only components needed for purchase, attach to the back plate for support of your new tablet. Note: If your tablet has an extended battery or handstrap integrated in the back, a set of risers ( RAM-HOL-TAB-RISER1U or RAM-HOL-TAB-RISER2U ) may be required to offset the cups to accomodate the added thickness. The Tab-Lock cradle is compatible with any tablet that will fit the dimensions listed below. It is important to verify the dimensions of your tablet when determining the overall size. Cradle Dimensions: Height: 10.5" to 12.5" Width: 6.5" to 7.75" Depth: 0.13" to 0.93"