diff --git a/esp3d/configuration.h b/esp3d/configuration.h
index 08c4a62d..e6b145c3 100644
--- a/esp3d/configuration.h
+++ b/esp3d/configuration.h
@@ -121,6 +121,11 @@
 //ESP_SDFAT                   3 //esp8266 (same as native) / esp32
 //#define SD_DEVICE    ESP_SDFAT
 
+//SD Device Connection type (default is direct)
+//ESP_DIRECT_SD
+//ESP_SHARED_SD
+#define SD_DEVICE_CONNECTION  ESP_DIRECT_SD
+
 //pin if reader has insert detection feature
 //let -1 or comment if none
 #define ESP_SD_DETECT_PIN       -1
diff --git a/esp3d/src/core/settings_esp3d.cpp b/esp3d/src/core/settings_esp3d.cpp
index e6c9e54b..bdbeb493 100644
--- a/esp3d/src/core/settings_esp3d.cpp
+++ b/esp3d/src/core/settings_esp3d.cpp
@@ -106,7 +106,7 @@
 #define DEFAULT_SD_CHECK_UPDATE_AT_BOOT 1
 #define DEFAULT_DHT_TYPE        NO_DHT_DEVICE
 #ifdef SD_DEVICE
-#define DEFAULT_SD_DEVICE_TYPE  ESP_DIRECT_SD
+#define DEFAULT_SD_DEVICE_TYPE  SD_DEVICE_CONNECTION
 #else
 #define DEFAULT_SD_DEVICE_TYPE  ESP_NO_SD
 #endif //SD_DEVICE