ugen0.3: <Slim Tablet WALTOP International Corp.> at usbus0, cfg=0 md=HOST spd=FULL (12Mbps) pwr=ON

  bLength = 0x0012 
  bDescriptorType = 0x0001 
  bcdUSB = 0x0110 
  bDeviceClass = 0x0000 
  bDeviceSubClass = 0x0000 
  bDeviceProtocol = 0x0000 
  bMaxPacketSize0 = 0x0008 
  idVendor = 0x172f 
  idProduct = 0x0034 
  bcdDevice = 0x1105 
  iManufacturer = 0x0001  <WALTOP International Corp.>
  iProduct = 0x0002  <Slim Tablet>
  iSerialNumber = 0x0000  <no string>
  bNumConfigurations = 0x0001 


 Configuration index 0

    bLength = 0x0009 
    bDescriptorType = 0x0002 
    wTotalLength = 0x0022 
    bNumInterfaces = 0x0001 
    bConfigurationValue = 0x0001 
    iConfiguration = 0x0000  <no string>
    bmAttributes = 0x00a0 
    bMaxPower = 0x0032 

    Interface 0
      bLength = 0x0009 
      bDescriptorType = 0x0004 
      bInterfaceNumber = 0x0000 
      bAlternateSetting = 0x0000 
      bNumEndpoints = 0x0001 
      bInterfaceClass = 0x0003 
      bInterfaceSubClass = 0x0000 
      bInterfaceProtocol = 0x0000 
      iInterface = 0x0000  <no string>

      Additional Descriptor

      bLength = 0x09
      bDescriptorType = 0x21
      bDescriptorSubType = 0x10
       RAW dump: 
       0x00 | 0x09, 0x21, 0x10, 0x01, 0x1e, 0x01, 0x22, 0x0d, 
       0x08 | 0x01

     Endpoint 0
        bLength = 0x0007 
        bDescriptorType = 0x0005 
        bEndpointAddress = 0x0081 
        bmAttributes = 0x0003 
        wMaxPacketSize = 0x0008 
        bInterval = 0x0008 
        bRefresh = 0x0000 
        bSynchAddress = 0x0000 

Result of sysctl hw.usb:


hw.usb.ehci.no_hs: 0
hw.usb.ehci.debug: 0
hw.usb.ohci.debug: 0
hw.usb.uhci.loop: 0
hw.usb.uhci.debug: 0
hw.usb.no_boot_wait: 0
hw.usb.ctrl.debug: 0
hw.usb.umass.debug: 0
hw.usb.urio.debug: 0
hw.usb.debug: 0
hw.usb.dev.debug: 0
hw.usb.template: 0
hw.usb.ugen.debug: 0
hw.usb.power_timeout: 30
hw.usb.uhub.debug: 0
hw.usb.proc.debug: 0
hw.usb.ss_delay: 0
hw.usb.pr_recovery_delay: 250
hw.usb.pr_poll_delay: 50
hw.usb.aue.debug: 0
hw.usb.axe.debug: 0
hw.usb.cdce.debug: 0
hw.usb.cue.debug: 0
hw.usb.kue.debug: 0
hw.usb.rue.debug: 0
hw.usb.udav.debug: 0
hw.usb.rum.debug: 0
hw.usb.uath.regdomain: 0
hw.usb.uath.countrycode: 0
hw.usb.ural.debug: 0
hw.usb.zyd.debug: 0
hw.usb.u3g.debug: 0
hw.usb.ubsa.debug: 0
hw.usb.uftdi.debug: 0
hw.usb.ulpt.debug: 0
hw.usb.uplcom.debug: 0
hw.usb.uslcom.debug: 0
hw.usb.uvisor.debug: 0
hw.usb.uvscom.debug: 0
hw.usb.ucom.debug: 0
hw.usb.uhid.debug: 0
hw.usb.ukbd.no_leds: 0
hw.usb.ukbd.debug: 0
hw.usb.ums.debug: 15