This is the new *CloudFormation Template Reference Guide*. Please update your bookmarks and links. For help getting started with CloudFormation, see the [AWS CloudFormation User Guide](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/Welcome.html).
# AWS::EC2::Instance ElasticInferenceAccelerator

**Note** 
Amazon Elastic Inference is no longer available.
Specifies the Elastic Inference Accelerator for the instance.
`ElasticInferenceAccelerator` is a property of the [AWS::EC2::Instance](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/aws-properties-ec2-instance.html) resource.
## Syntax

To declare this entity in your CloudFormation template, use the following syntax:
### JSON

```
{
 "[Count](#cfn-ec2-instance-elasticinferenceaccelerator-count)" : {{Integer}},
 "[Type](#cfn-ec2-instance-elasticinferenceaccelerator-type)" : {{String}}
}
```
### YAML

```
 [Count](#cfn-ec2-instance-elasticinferenceaccelerator-count): {{Integer}}
 [Type](#cfn-ec2-instance-elasticinferenceaccelerator-type): {{String}}
```
## Properties

`Count` 
The number of elastic inference accelerators to attach to the instance. 
*Required*: No 
*Type*: Integer 
*Minimum*: `0` 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)
`Type` 
 The type of elastic inference accelerator. The possible values are `eia1.medium`, `eia1.large`, `eia1.xlarge`, `eia2.medium`, `eia2.large`, and `eia2.xlarge`. 
*Required*: Yes 
*Type*: String 
*Update requires*: [Replacement](https://docs.aws.amazon.com/AWSCloudFormation/latest/UserGuide/using-cfn-updating-stacks-update-behaviors.html#update-replacement)</div><div class="naked_ctrl">
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