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diff --git a/Marlin/src/pins/mega/pins_GT2560_V3_A20.h b/Marlin/src/pins/mega/pins_GT2560_V3_A20.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
+
+/**
+ * Geeetech A20M pin assignment
+ */
+
+#define LCD_PINS_RS                            5
+#define LCD_PINS_ENABLE                       36
+#define LCD_PINS_D4                           21
+#define LCD_PINS_D7                            6
+
+#define SPEAKER  // The speaker can produce tones
+
+#if IS_NEWPANEL
+  #define BTN_EN1                             16
+  #define BTN_EN2                             17
+  #define BTN_ENC                             19
+#endif
+
+#include "pins_GT2560_V3.h"