# InstanceBlockDeviceMapping


Describes a block device mapping.

## Contents


 ** deviceName **   
The device name.  
Type: String  
Required: No

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

## See Also


For more information about using this API in one of the language-specific Amazon SDKs, see the following:
+  [Amazon SDK for C\$1\$1](https://docs.amazonaws.cn/goto/SdkForCpp/ec2-2016-11-15/InstanceBlockDeviceMapping) 
+  [Amazon SDK for Java V2](https://docs.amazonaws.cn/goto/SdkForJavaV2/ec2-2016-11-15/InstanceBlockDeviceMapping) 
+  [Amazon SDK for Ruby V3](https://docs.amazonaws.cn/goto/SdkForRubyV3/ec2-2016-11-15/InstanceBlockDeviceMapping)