Searching for a way to "download" the android.hardware.usb.host.xml file usually means you are trying to enable USB Host Mode (OTG) on a device that doesn't have it active by default.
After reboot, apps like USB OTG Checker should report “USB Host – Supported.” androidhardwareusbhostxml file download 2021
android.hardware.usb.host.xml file is a system permission file that explicitly enables USB Host mode Searching for a way to "download" the android
In 2021, this file remained relevant primarily for: androidhardwareusbhostxml file download 2021
If you are a developer and your app requires USB host support, you don't provide this file to users. Instead, you declare the requirement in your AndroidManifest.xml so the Google Play Store only shows your app to compatible devices: