---
title: reset()
framework: iousbhost
role: symbol
role_heading: Instance Method
path: iousbhost/iousbhostdevice/reset()
---

# reset()

Terminates the device and attempts to re-enumerate it.

## Declaration

```swift
func reset() throws
```

## Discussion

Discussion This function resets and attempts to re-enumerate the USB device, and terminates the IOUSBHostDevice and all of its child IOService objects. If the reset is successful, it also creates and registers a new IOService object after terminating the previous object. After the call returns successfully, the framework IOUSBHostDevice no longer has a valid connection with the IOService object. important: To use the re-enumerated device, you must create a new framework client using initWithIOService:options:queue:error:interestHandler:.