As a quick installation case of PRO DI, we hope that customers can freely replace the required PRO DI on the rack without using any tools, because, in the 2U standard size chassis, we have designed 8 replacement slots , and the bezel is fixed with manual turning screws, so that engineers can insert or replace the desired PRO DI at any time. When your new RA-8 arrives, you’ll find it in a bulk pack with a quick install exploded diagram attached. Users can use it like buying furniture at IKEA. Once installed it is ready to use.