newsupernova/vendor/magento/module-media-storage/etc/adminhtml/system.xml

<?xml version="1.0"?>
<!--
/**
 * Copyright © Magento, Inc. All rights reserved.
 * See COPYING.txt for license details.
 */
-->
<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
        <section id="system" type="text" sortOrder="900" showInDefault="1" showInWebsite="1" showInStore="1">
            <group id="media_storage_configuration" translate="label" type="text" sortOrder="900" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>Storage Configuration for Media</label>
                <field id="media_storage" translate="label" type="select" sortOrder="100" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                    <label>Media Storage</label>
                    <source_model>Magento\MediaStorage\Model\Config\Source\Storage\Media\Storage</source_model>
                </field>
                <field id="media_database" translate="label" type="select" sortOrder="200" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                    <label>Select Media Database</label>
                    <source_model>Magento\MediaStorage\Model\Config\Source\Storage\Media\Database</source_model>
                    <backend_model>Magento\MediaStorage\Model\Config\Backend\Storage\Media\Database</backend_model>
                    <depends>
                        <field id="media_storage">1</field>
                    </depends>
                </field>
                <field id="synchronize" translate="label comment" type="button" sortOrder="300" showInDefault="1" showInWebsite="0" showInStore="0">
                    <frontend_model>Magento\MediaStorage\Block\System\Config\System\Storage\Media\Synchronize</frontend_model>
                    <comment>After selecting a new media storage location, press the Synchronize button to transfer all media to that location. Media will not be available in the new location until the synchronization process is complete.</comment>
                </field>
                <field id="configuration_update_time" translate="label" type="text" sortOrder="400" showInDefault="1" showInWebsite="0" showInStore="0" canRestore="1">
                    <label>Environment Update Time</label>
                </field>
            </group>
        </section>
    </system>
</config>