---
title: HwDeactivate
framework: usbserialdriverkit
role: symbol
role_heading: Instance Method
path: usbserialdriverkit/iouserusbserial/hwdeactivate
---

# HwDeactivate

Closes the communication channel to the device.

## Declaration

```occ
virtual kern_return_t HwDeactivate();
```

## Return Value

Return Value kIOReturnSuccess on success, or another value if an error occurs. See Error Codes.

## Discussion

Discussion Override this method and use it to close the connection to your device’s hardware. Always call the super version of the method at the end of your implementation.

## See Also

### Activating and Deactivating the Service

- [HwActivate](usbserialdriverkit/iouserusbserial/hwactivate.md)