最終更新:2021-07-22 (木) 13:26:58 (65d)  

bcdUSB
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0x310

0x300

0x210

0x201

  • USB 2.0
  • BOSディスクリプタに対応
  • The value of the bcdUSB field in the standard USB 2.0 Device Descriptor is used to indicate that the device supports the request to read the BOS Descriptor (i.e. GetDescriptor?(BOS))
  • Devices that support the BOS descriptor must have a bcdUSB value of 0201H or larger

0x200

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  • USB 1.0?