idVendor: 0x20A0
  iManufacturer: Canokeys
 idProduct: 0x42D4
  iProduct: Canokey
 bcdDevice: 1.00 (firmware release?)
 bLength: 9
 bDescriptorType: 4
 bInterfaceNumber: 2
 bAlternateSetting: 0
 bNumEndpoints: 2
  bulk-IN and bulk-OUT
 bInterfaceClass: 0x0B [Chip Card Interface Device Class (CCID)]
 bInterfaceSubClass: 0
 bInterfaceProtocol: 0
  bulk transfer, optional interrupt-IN (CCID)
 iInterface: OpenPGP PIV OATH
 CCID Class Descriptor
  bLength: 0x36
  bDescriptorType: 0x21
  bcdCCID: 1.10
  bMaxSlotIndex: 0x00
  bVoltageSupport: 0x07
   5.0V
   3.0V
   1.8V
  dwProtocols: 0x0000 0x0002
   T=1
  dwDefaultClock: 4.000 MHz
  dwMaximumClock: 4.000 MHz
  bNumClockSupported: 0 (will use whatever is returned)
   IFD does not support GET CLOCK FREQUENCIES request: LIBUSB_ERROR_PIPE
  dwDataRate: 307200 bps
  dwMaxDataRate: 307200 bps
  bNumDataRatesSupported: 0 (will use whatever is returned)
   IFD does not support GET_DATA_RATES request: LIBUSB_ERROR_PIPE
  dwMaxIFSD: 1342
  dwSynchProtocols: 0x00000000
  dwMechanical: 0x00000000
   No special characteristics
  dwFeatures: 0x000400FE
   ....02 Automatic parameter configuration based on ATR data
   ....04 Automatic activation of ICC on inserting
   ....08 Automatic ICC voltage selection
   ....10 Automatic ICC clock frequency change according to parameters
   ....20 Automatic baud rate change according to frequency and Fi, Di params
   ....40 Automatic parameters negotiation made by the CCID
   ....80 Automatic PPS made by the CCID
   04.... Short and Extended APDU level exchange
  dwMaxCCIDMessageLength: 1352 bytes
  bClassGetResponse: 0xFF
   echoes the APDU class
  bClassEnvelope: 0xFF
   echoes the APDU class
  wLcdLayout: 0x0000
  bPINSupport: 0x00
  bMaxCCIDBusySlots: 1