Constant nvapi_sys::gpu::display::NV_GPU_DISPLAYIDS_FLAGS_MST_ROOT_NODE

pub const NV_GPU_DISPLAYIDS_FLAGS_MST_ROOT_NODE: NV_GPU_DISPLAYIDS_FLAGS = 2 as _; // 2u32

This displayID belongs to a multi stream enabled connector(root node). Note that when multi stream is enabled and a single multi stream capable monitor is connected to it, the monitor will share the display id with the RootNode.