URIO_T_WR
[URIO_T_WR] = {
struct usb_xfer *xfer_other = sc->sc_xfer[URIO_T_WR];
usbd_transfer_start(sc->sc_xfer[URIO_T_WR]);
usbd_transfer_stop(sc->sc_xfer[URIO_T_WR]);
usbd_xfer_max_len(sc->sc_xfer[URIO_T_WR]),