00 Interface
01 Audio
   01 Control Device
   02 Streaming
   03 Non Streaming
02 Communications
   01 Direct Line
   02 Modem
      00 None
      01 AT-commands
      FF Vendor Specific
   03 Telephone
   04 Multi-Channel
   05 CAPI Control
   06 Ethernet Networking
   07 ATM Networking
03 Human Interface Devices
   00 No Subclass
      00 None
      01 Keyboard
      02 Mouse
   01 Boot Interface Subclass
      00 None
      01 Keyboard
      02 Mouse
06 Imaging
   01 Still Image Capture
      01 Picture Transfer Protocol (PIMA)
07 Printer
   01 Printer
      00 Undefined
      01 Unidirectional
      02 Bidirectional
      03 IEEE 1284.4 compatible
      FF Vendor Specific
08 Storage
   01 Flash
      00 Control/Bulk/Interrupt
      01 Control/Bulk
      50 Bulk (Zip)
   02 ATAPI
   03 QIC
   04 Floppy
      00 Control/Bulk/Interrupt
      01 Control/Bulk
      50 Bulk (Zip)
   05 SFF-8070i
   06 SCSI
      00 Control/Bulk/Interrupt
      01 Control/Bulk
      50 Bulk (Zip)
09 USB Hub
10 USB Data
   30 I.430 ISDN BRI
   31 HDLC
   32 Transparent
   50 Q.921M
   51 Q.921
   52 Q.921TM
   90 V.42bis
   91 Q.932 EuroISDN
   92 V.120 V.24 rate ISDN
   93 CAPI 2.0
   FD Host Based Driver
   FE CDC PUF
   FF Vendor specific
FF Vendor Specific Class
   FF Vendor Specific Subclass
      FF Vendor Specific Protocol
