SolydXK comes with a wide variety of drivers pre-installed. For most purposes these drivers suffice but in some cases better performance is provided by the proprietary drivers of the manufacturer.
The install button will open the SolydXK System Settings application. This is a tool to help you installing these hardware drivers. It will check your hardware and list any available proprietary drivers you can install. You only need to select the recommended driver for your hardware and the application will do the rest.
Currently Nvidia, AMD/ATI and Broadcom drivers can be installed. SolydXK System Settings also allows to install the PAE kernel for multi-core 32-bit systems.