1e41f4b71Sopenharmony_ci# USB Subsystem API Changelog
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3e41f4b71Sopenharmony_ci## cl.usb_manager.1 SDK API Deletion
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5e41f4b71Sopenharmony_ciFor applications developed based on earlier versions, you need to change the name of the imported bundle. Otherwise, the original service logic will be affected.
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7e41f4b71Sopenharmony_ci**Key API/Component Changes**
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9e41f4b71Sopenharmony_ciThe **@ohos.usbV9.d.ts** file is replaced by the **@ohos.usbManager.d.ts** file.
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11e41f4b71Sopenharmony_ci|         New Bundle        |     Original Bundle   |    Deleted Bundle   |
12e41f4b71Sopenharmony_ci| -------------------- | ------------- | --------------- |
13e41f4b71Sopenharmony_ci| ohos.usbManager.d.ts | ohos.usb.d.ts | ohos.usbV9.d.ts |
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15e41f4b71Sopenharmony_ciYou need to import **@ohos.usbManager** to use USB service APIs.
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17e41f4b71Sopenharmony_ci  ```ts
18e41f4b71Sopenharmony_ci  import usbManager from '@ohos.usbManager';
19e41f4b71Sopenharmony_ci  ```
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21e41f4b71Sopenharmony_ci**Adaptation Guide**
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23e41f4b71Sopenharmony_ciFor details about usage of each API, see the [API Reference](../../../application-dev/reference/apis/js-apis-usbManager.md).
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