To reveal this page you need to select Amazon S3 file protocol on Login dialog.
Refer to documentation of page sections:
Use Default region to specify the default region for an authentication and new buckets. When no default region is specified,
us-east-1 is used.
Use URL style to switch to legacy Path URL style, when connecting to S3-compatible systems (e.g. MinIO) that do not support the Virtual Host URL style, which is now preferred by Amazon S3.