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diff --git a/Marlin/src/pins/ramps/pins_SAINSMART_2IN1.h b/Marlin/src/pins/ramps/pins_SAINSMART_2IN1.h
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+/**
+ * Marlin 3D Printer Firmware
+ * Copyright (c) 2020 MarlinFirmware [https://github.com/MarlinFirmware/Marlin]
+ *
+ * Based on Sprinter and grbl.
+ * Copyright (c) 2011 Camiel Gubbels / Erik van der Zalm
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <https://www.gnu.org/licenses/>.
+ *
+ */
+#pragma once
+
+/**
+ * Sainsmart 2-in-1 pin assignments
+ */
+
+#if HOTENDS > 2 || E_STEPPERS > 2
+  #error "Sainsmart 2-in-1 supports up to 2 hotends / E-steppers. Comment out this line to continue."
+#endif
+
+#define BOARD_INFO_NAME "Sainsmart"
+
+//
+// Heaters / Fans
+//
+#define RAMPS_D10_PIN 9   // E
+#define RAMPS_D9_PIN  7   // F PART FAN in front of board next to Extruder heat
+     // RAMPS_D8_PIN  8   // B
+#define MOSFET_D_PIN 10   // F / E
+
+#include "pins_RAMPS.h"