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# VZFileHandleSerialPortAttachment

An attachment point that allows bidirectional communication using file handles.

```
class VZFileHandleSerialPortAttachment
```

## Overview

Use a [`VZFileHandleSerialPortAttachment`](/documentation/Virtualization/VZFileHandleSerialPortAttachment) object to configure a serial port using separate file handles for reading and writing data. In your virtual machine, use the file handles in this object in the following way:

- To send data to the guest operating system, write data to the file handle in the [`fileHandleForReading`](/documentation/Virtualization/VZFileHandleSerialPortAttachment/fileHandleForReading) property.
- To receive data from the guest operating system, read data from the file handle in the [`fileHandleForWriting`](/documentation/Virtualization/VZFileHandleSerialPortAttachment/fileHandleForWriting) property.

## Topics

### Creating the attachment point

[`init(fileHandleForReading:fileHandleForWriting:)`](/documentation/Virtualization/VZFileHandleSerialPortAttachment/init(fileHandleForReading:fileHandleForWriting:))

Creates a serial port attachment object from the specified file handles.

### Getting the file handles

[`fileHandleForReading`](/documentation/Virtualization/VZFileHandleSerialPortAttachment/fileHandleForReading)

The file handle that the guest operating system uses to read data.

[`fileHandleForWriting`](/documentation/Virtualization/VZFileHandleSerialPortAttachment/fileHandleForWriting)

The file handle that the guest operating system uses to write data.


---

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