 idVendor: 0x04E6
  iManufacturer: SCM Microsystems Inc.
 idProduct: 0x5120
  iProduct: SCR331-DI USB Smart Card Reader
 bcdDevice: 6.27 (firmware release?)
 bLength: 9
 bDescriptorType: 4
 bInterfaceNumber: 0
 bAlternateSetting: 0
 bNumEndpoints: 3
 bInterfaceClass: 0xFF
  NOT A CCID DEVICE
  Class is 0xFF (proprietary)
 bInterfaceSubClass: 0
 bInterfaceProtocol: 0
 iInterface: 4
 CCID Class Descriptor
  bLength: 0x36
  bDescriptorType: 0x21
  bcdCCID: 1.00
  bMaxSlotIndex: 0x01
  bVoltageSupport: 0x01
   5.0V
  dwProtocols: 0x0000 0x0003
   T=0
   T=1
  dwDefaultClock: 4.000 MHz
  dwMaximumClock: 12.000 MHz
  bNumClockSupported: 0
   IFD does not support GET CLOCK FREQUENCIES request
  dwDataRate: 10753 bps
  dwMaxDataRate: 344105 bps
  bNumDataRatesSupported: 0
   IFD does not support GET_DATA_RATES request
  dwMaxIFSD: 252
  dwSynchProtocols: 0x00000000
  dwMechanical: 0x00000000
   No special characteristics
  dwFeatures: 0x000100BA
   ....02 Automatic parameter configuration based on ATR data
   ....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
   ....80 Automatic PPS made by the CCID
   01.... TPDU level exchange
  dwMaxCCIDMessageLength: 263 bytes
  bClassGetResponse: 0xFF
  bClassEnvelope: 0xFF
  wLcdLayout: 0x0000
  bPINSupport: 0x00
  bMaxCCIDBusySlots: 1
