Hardware classes — USB

Class IDs describe function, not package compatibility. Many dataset device records do not carry a class; the scanner’s compatible IDs can supply that context.

CDC Data

• 00 Unused
  • 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

Dataset: USB ID Repository · 2026.06.26 · BSD-3-Clause · Source, license and limitations