1 USB C Female to Female Extension Cable with Panel Mount Screw Hole, use to mount to the PCI bracket, helps you easily connect the devices with a type C interface. it's easy to hook up and install and it's just an extension/port so no need to install drivers; 2 This USB 3.1 Type-C Extender Adapter Cable is designed for extending the connection between USB-C devices such as Nintendo Switch, Type-C smartphones, or laptops for charging or data syncing.