最終更新:2021-07-22 (木) 13:26:58 (1001d)
bcdUSB
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値
0x310
- Enhanced SuperSpeed Device (USB 3.0もしくはUSB 3.1のバス動作)
0x300
0x210
0x201
- USB 2.0
- RealtekのUSBカメラ
- 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
0x110
0x100
- USB 1.0?
