# InstanceBlockDeviceMappingSpecification
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Describes a block device mapping entry.

## Contents
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 ** DeviceName **   
The device name. For available device names, see [Device names for volumes](https://docs.aws.amazon.com/AWSEC2/latest/UserGuide/device_naming.html).  
Type: String  
Required: No

 ** Ebs **   
Parameters used to automatically set up EBS volumes when the instance is launched.  
Type: [EbsInstanceBlockDeviceSpecification](API_EbsInstanceBlockDeviceSpecification.md) object  
Required: No

 ** NoDevice **   
Suppresses the specified device included in the block device mapping.  
Type: String  
Required: No

 ** VirtualName **   
The virtual device name.  
Type: String  
Required: No

## See Also
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For more information about using this API in one of the language-specific AWS SDKs, see the following:
+  [AWS SDK for C\$1\$1](https://docs.aws.amazon.com/goto/SdkForCpp/ec2-2016-11-15/InstanceBlockDeviceMappingSpecification) 
+  [AWS SDK for Java V2](https://docs.aws.amazon.com/goto/SdkForJavaV2/ec2-2016-11-15/InstanceBlockDeviceMappingSpecification) 
+  [AWS SDK for Ruby V3](https://docs.aws.amazon.com/goto/SdkForRubyV3/ec2-2016-11-15/InstanceBlockDeviceMappingSpecification)