USBVIEW显示结果：
Device Descriptor:
bcdUSB: 0x0110
bDeviceClass: 0x00
bDeviceSubClass: 0x00
bDeviceProtocol: 0x00
bMaxPacketSize0: 0x08 (8)
idVendor: 0x06A2 (Topro Technology Inc.)
idProduct: 0x0003
bcdDevice: 0x0000
iManufacturer: 0x00
iProduct: 0x00
iSerialNumber: 0x00
bNumConfigurations: 0x01
ConnectionStatus: DeviceFailedEnumeration
Current Config Value: 0x00
Device Bus Speed: Low
Device Address: 0x00
Open Pipes: 0
