diff --git a/Download-Types.md b/Download-Types.md
index 7684a56..480daf5 100644
--- a/Download-Types.md
+++ b/Download-Types.md
@@ -21,4 +21,5 @@ The `PreferredDownloadType` setting in `config.json` determines which of these m
 ## Direct
 
   * In `direct` mode, files are read directly from the corresponding provider without any local caching.
+  * An in-memory ring buffer is used to cache up to 5 8MiB chunks.
   * This mode only supports read.
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