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Problem in the reported usbclass of a HP3400C

Help!
2005-10-14
2013-04-09
  • I have a HP 3400C and I the scanner is reported as a class 10 device. Is this correct?
    I use Ubuntu Breezy (kernel 2.6.12-9-k7, libusb-0.1.10a-17ubuntu1, hotplug 0.0.20040329-22ubuntu13, libsane 1.0.15-9ubuntu6)

    from  cat /proc/bus/usb/devices:
    Bus=02 Lev=01 Prnt=01 Port=01 Cnt=01 Dev#=  4 Spd=12  MxCh= 0
    D:  Ver= 1.00 Cls=00(>ifc ) Sub=00 Prot=00 MxPS= 8 #Cfgs=  1
    P:  Vendor=03f0 ProdID=0405 Rev= 0.00
    S:  Manufacturer=Hewlett-Packard
    S:  Product=Hewlett-Packard ScanJet 3400C
    S:  SerialNumber=CN09Q1G157TG
    C:* #Ifs= 1 Cfg#= 1 Atr=40 MxPwr= 48mA
    I:  If#= 0 Alt= 0 #EPs= 3 Cls=10(unk. ) Sub=01 Prot=00 Driver=(none)
    E:  Ad=81(I) Atr=02(Bulk) MxPS=  64 Ivl=0ms
    E:  Ad=02(O) Atr=02(Bulk) MxPS=  64 Ivl=0ms
    E:  Ad=83(I) Atr=03(Int.) MxPS=   1 Ivl=8ms

    Bruno Parente

     
    • Bertrik Sikken
      Bertrik Sikken
      2005-10-14

      I think the class reported by the scanner does not really matter. As far as I know, there is no such thing as an USB "scanner" class or something.

       
    • There is a usb class for scanners and ptp devices, the number is 0x06.
      But this does not affect the functioning of the scanner, therefore I use it normally. I was only curious.

      Bruno Parente