diff --git a/Marlin/Configuration.h b/Marlin/Configuration.h
index d3b4779..e5b35c0 100644
--- a/Marlin/Configuration.h
+++ b/Marlin/Configuration.h
@@ -123,8 +123,10 @@
  * Currently Ethernet (-2) is only supported on Teensy 4.1 boards.
  * :[-2, -1, 0, 1, 2, 3, 4, 5, 6, 7]
  */
-//#define SERIAL_PORT_2 -1
-//#define BAUDRATE_2 250000   // :[2400, 9600, 19200, 38400, 57600, 115200, 250000, 500000, 1000000] Enable to override BAUDRATE
+//
+
+#define SERIAL_PORT_2 -1
+#define BAUDRATE_2 250000   // :[2400, 9600, 19200, 38400, 57600, 115200, 250000, 500000, 1000000] Enable to override BAUDRATE
 
 /**
  * Select a third serial port on the board to use for communication with the host.
diff --git a/Marlin/Configuration_adv.h b/Marlin/Configuration_adv.h
index d4f5472..bad7949 100644
--- a/Marlin/Configuration_adv.h
+++ b/Marlin/Configuration_adv.h
@@ -635,7 +635,7 @@
  * Multiple extruders can be assigned to the same pin in which case
  * the fan will turn on when any selected extruder is above the threshold.
  */
-#define E0_AUTO_FAN_PIN -1
+#define E0_AUTO_FAN_PIN FAN1_PIN
 #define E1_AUTO_FAN_PIN -1
 #define E2_AUTO_FAN_PIN -1
 #define E3_AUTO_FAN_PIN -1
@@ -1636,8 +1636,8 @@
   // LCD's font must contain the characters. Check your selected LCD language.
   //#define UTF_FILENAME_SUPPORT
 
-  //#define LONG_FILENAME_HOST_SUPPORT    // Get the long filename of a file/folder with 'M33 <dosname>' and list long filenames with 'M20 L'
-  //#define LONG_FILENAME_WRITE_SUPPORT   // Create / delete files with long filenames via M28, M30, and Binary Transfer Protocol
+  #define LONG_FILENAME_HOST_SUPPORT    // Get the long filename of a file/folder with 'M33 <dosname>' and list long filenames with 'M20 L'
+  #define LONG_FILENAME_WRITE_SUPPORT   // Create / delete files with long filenames via M28, M30, and Binary Transfer Protocol
   //#define M20_TIMESTAMP_SUPPORT         // Include timestamps by adding the 'T' flag to M20 commands
 
   //#define SCROLL_LONG_FILENAMES         // Scroll long filenames in the SD card menu