---
title: MTLIOCommandQueueType.serial
framework: metal
role: symbol
role_heading: Case
path: metal/mtliocommandqueuetype/serial
---

# MTLIOCommandQueueType.serial

Sets a new input/output command queue’s type to a queue that runs commands serially.

## Declaration

```swift
case serial
```

## See Also

### I/O command queue types

- [MTLIOCommandQueueType.concurrent](metal/mtliocommandqueuetype/concurrent.md)