diff --git a/presto-docs/src/main/sphinx/connector/hive.rst b/presto-docs/src/main/sphinx/connector/hive.rst
index ab2829182cecd..c1bcd9c9a1f8d 100644
--- a/presto-docs/src/main/sphinx/connector/hive.rst
+++ b/presto-docs/src/main/sphinx/connector/hive.rst
@@ -487,7 +487,13 @@ Enabling S3 Select Pushdown
 You can enable S3 Select Pushdown using the ``s3_select_pushdown_enabled``
 Hive session property or using the ``hive.s3select-pushdown.enabled``
 configuration property. The session property will override the config
-property, allowing you enable or disable on a per-query basis.
+property, allowing you enable or disable on a per-query basis. Non-filtering
+queries (``SELECT * FROM table``) are not pushed down to S3 Select,
+as they retrieve the entire object content.
+
+For uncompressed files, S3 Select scans ranges of bytes in parallel.
+The scan range requests run across the byte ranges of the internal
+Hive splits for the query fragments pushed down to S3 Select.
 
 Understanding and Tuning the Maximum Connections
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