The RAM-HOL-TABL19U consists of a spring-loaded back plate, custom support cups, and a locking mechanism. This spring-loaded design makes it easy to load and unload your tablet while keeping it secure on the go. The cup ends are designed to optimize the functionality of your tablet, allowing access to audio jacks, USB, power, and other ports, so your tablet can be used just as intended. Quickly lock the cradle to keep 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; they attach to the back plate for support of your new tablet. Note: If your tablet has an extended battery or hand strap integrated into the back, a set of risers may be required to offset the cups to accommodate the added thickness. The Tab-Lock cradle is compatible with any tablet that fits 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".