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USB defines class code information that is used to identify a device's functionality and to nominally load a device driver based on that functionality.

2023/11/9 -USB defines class code information that is used to identify a device's functionality and to nominally load a device driver based on that ...

Sub indicates which sub-class (within the Cls entry), the device meets. Prot indicates which protocol within a class or sub-class the device claims to meet.

2024/2/19 -The numbers represent the interface class (cc), subclass (ss) and protocol (pp) as assigned by the USB-IF (List of assigned classes, subclasses ...

USB_DEVICE_INFO(class, subclass, protocol). Creates a struct usb_device_id that can be used to match a specific class of USB devices. USB_INTERFACE_INFO ...

The USB mass storage device class is a set of computing communications protocols, specifically a USB Device Class, defined by the USB Implementers Forum ...

2014/4/10 -This string contains the device class (usb) and class-specific information (vendor/product/serial number, device class, etc). Each kernel driver ...

2013/11/30 -Every USB device has to come under some USB device class definition based on the device driver will get use on the Linux system.. that part i ...

Many USB devices only have one interface. The protocol used to talk to an interface's endpoints can be defined in a usb “class” specification, or by a product's ...