> For the complete documentation index, see [llms.txt](https://smartpossdk.gitbook.io/cloudpossdk/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://smartpossdk.gitbook.io/cloudpossdk/faq/usb-serial-port/list-connected-usb-devices.md).

# List Connected USB Devices

### Overview:

This guide provides a method for listing all connected USB devices on an Android device, using the standard Android API. It is particularly useful for developers and users who need to monitor USB connections.

### Resources:

1. **APK for Direct Implementation:**
   * Download the ready-to-use APK to instantly list connected USB devices on your Android device, [Download APK](https://ftp.wizarpos.com/advanceSDK/app-release-SHA1withRSA-v1v2-signed.apk).
2. **Application Source Code:**
   * For developers interested in customizing or understanding the underlying code, the source code of the application is available for download, [Download APP Source Code](https://github.com/SmartPOSSamples/UsbDevicesList).

This guide and the provided resources are designed to assist both general users in easily identifying connected USB devices and developers in creating or modifying applications with similar functionalities.