libusb_get_descriptor
int libusb_get_descriptor(libusb_device_handle * devh, uint8_t desc_type, uint8_t desc_index, uint8_t *data, int length);
err = libusb_get_descriptor(handle, LIBUSB_DT_BOS, 0,
err = libusb_get_descriptor(handle, LIBUSB_DT_BOS, 0,