# UsbSerial_DeviceHandle
<!--Kit: Driver Development Kit-->
<!--Subsystem: Driver-->
<!--Owner: @lixinsheng2-->
<!--Designer: @w00373942-->
<!--Tester: @dong-dongzhen-->
<!--Adviser: @w_Machine_cc-->

## Overview

Defines the data structures (opaque) for the USB serial port device.

**Since**: 18

**Related module**: [SerialDdk](capi-serialddk.md)

**Header file:** [usb_serial_types.h](capi-usb-serial-types-h.md)