usbconfig -d ugen2.2 dump_curr_config_desc
ugen2.2: <Vodafone (Huawei) Vodafone (Huawei)> at usbus2, cfg=1 md=HOST spd=HIGH (480Mbps) pwr=ON (2mA)


 Configuration index 1

    bLength = 0x0009
    bDescriptorType = 0x0002
    wTotalLength = 0x0076
    bNumInterfaces = 0x0003
    bConfigurationValue = 0x0002
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x00a0
    bMaxPower = 0x0001

    Additional Descriptor

    bLength = 0x08
    bDescriptorType = 0x0b
    bDescriptorSubType = 0x00
     RAW dump:
     0x00 | 0x08, 0x0b, 0x00, 0x02, 0x02, 0x0e, 0x00, 0x08


    Interface 0
      bLength = 0x0009
      bDescriptorType = 0x0004
      bInterfaceNumber = 0x0000
      bAlternateSetting = 0x0000
      bNumEndpoints = 0x0001
      bInterfaceClass = 0x0002  <Communication device>
      bInterfaceSubClass = 0x000e
      bInterfaceProtocol = 0x0000
      iInterface = 0x0005  <NCM Network Control Model>

      Additional Descriptor

      bLength = 0x05
      bDescriptorType = 0x24
      bDescriptorSubType = 0x00
       RAW dump:
       0x00 | 0x05, 0x24, 0x00, 0x10, 0x01


      Additional Descriptor

      bLength = 0x0c
      bDescriptorType = 0x24
      bDescriptorSubType = 0x1b
       RAW dump:
       0x00 | 0x0c, 0x24, 0x1b, 0x00, 0x01, 0x00, 0x04, 0x20,
       0x08 | 0x80, 0xdc, 0x05, 0x20


      Additional Descriptor

      bLength = 0x08
      bDescriptorType = 0x24
      bDescriptorSubType = 0x1c
       RAW dump:
       0x00 | 0x08, 0x24, 0x1c, 0x00, 0x01, 0x10, 0xdc, 0x05


      Additional Descriptor

      bLength = 0x05
      bDescriptorType = 0x24
      bDescriptorSubType = 0x06
       RAW dump:
       0x00 | 0x05, 0x24, 0x06, 0x00, 0x01


     Endpoint 0
        bLength = 0x0007
        bDescriptorType = 0x0005
        bEndpointAddress = 0x0082  <IN>
        bmAttributes = 0x0003  <INTERRUPT>
        wMaxPacketSize = 0x0010
        bInterval = 0x0005
        bRefresh = 0x0000
        bSynchAddress = 0x0000


    Interface 1
      bLength = 0x0009
      bDescriptorType = 0x0004
      bInterfaceNumber = 0x0001
      bAlternateSetting = 0x0000
      bNumEndpoints = 0x0000
      bInterfaceClass = 0x000a  <CDC-data>
      bInterfaceSubClass = 0x0000
      bInterfaceProtocol = 0x0002
      iInterface = 0x0006  <CDC Network Data>


    Interface 1 Alt 1
      bLength = 0x0009
      bDescriptorType = 0x0004
      bInterfaceNumber = 0x0001
      bAlternateSetting = 0x0001
      bNumEndpoints = 0x0002
      bInterfaceClass = 0x000a  <CDC-data>
      bInterfaceSubClass = 0x0000
      bInterfaceProtocol = 0x0002
      iInterface = 0x0006  <CDC Network Data>

     Endpoint 0
        bLength = 0x0007
        bDescriptorType = 0x0005
        bEndpointAddress = 0x0081  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0200
        bInterval = 0x0000
        bRefresh = 0x0000
        bSynchAddress = 0x0000

     Endpoint 1
        bLength = 0x0007
        bDescriptorType = 0x0005
        bEndpointAddress = 0x0001  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0200
        bInterval = 0x0000
        bRefresh = 0x0000
        bSynchAddress = 0x0000


    Interface 2
      bLength = 0x0009
      bDescriptorType = 0x0004
      bInterfaceNumber = 0x0002
      bAlternateSetting = 0x0000
      bNumEndpoints = 0x0002
      bInterfaceClass = 0x0008  <Mass storage>
      bInterfaceSubClass = 0x0006
      bInterfaceProtocol = 0x0050
      iInterface = 0x0004  <Mass Storage>

     Endpoint 0
        bLength = 0x0007
        bDescriptorType = 0x0005
        bEndpointAddress = 0x0083  <IN>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0200
        bInterval = 0x0000
        bRefresh = 0x0000
        bSynchAddress = 0x0000

     Endpoint 1
        bLength = 0x0007
        bDescriptorType = 0x0005
        bEndpointAddress = 0x0002  <OUT>
        bmAttributes = 0x0002  <BULK>
        wMaxPacketSize = 0x0200
        bInterval = 0x0001
        bRefresh = 0x0000
        bSynchAddress = 0x0000