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Two very similar devices, with two functions - a regular camera and IR. The peculiarity of their infrared camera is that it uses a color image format (YUYV), although it is essentially black and white. The IR camera interface differs from the regular camera interface by name: "HP Wide Vision FHD Camera: HP W" for the regular camera and "HP Wide Vision FHD Camera: HP I" for an infrared camera Therefore, glob *I is used to separate the IR camera
Files in this directory specify a description of hardware devices, in the form of mappings from modalias-like keys (which identify specific hardware devices) to udev properties. Files in this directory are not read by udev directly. Instead, man:systemd-hwdb(8) compiles them into a binary database. See man:hwdb(7) for an overview of the configuration file format, and man:systemd-udevd.service(8) for a description of the udev daemon. Use 'systemd-analyze cat-config udev/hwdb.d' to display the effective config.