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# MTLDeviceLocation

Indicates the location of the GPU relative to the system it’s connect to.

```
enum MTLDeviceLocation
```

## Overview

Check the location of a GPU by checking the [`location`](/documentation/Metal/MTLDevice/location) property of its [`MTLDevice`](/documentation/Metal/MTLDevice) instance.

## Topics

### Determining the GPU’s location

[`MTLDeviceLocation.builtIn`](/documentation/Metal/MTLDeviceLocation/builtIn)

A location that indicates the GPU is permanently connected to the system internally.

[`MTLDeviceLocation.slot`](/documentation/Metal/MTLDeviceLocation/slot)

A GPU location that indicates a person connected the GPU to a system’s internal slot.

[`MTLDeviceLocation.external`](/documentation/Metal/MTLDeviceLocation/external)

A GPU location that indicates a person connected the GPU to the system with an external interface, such as Thunderbolt.

[`MTLDeviceLocation.unspecified`](/documentation/Metal/MTLDeviceLocation/unspecified)

A value that indicates the system can’t determine how the GPU connects to it.


---

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