diff --git a/Marlin/src/inc/Changes.h b/Marlin/src/inc/Changes.h
index dd8acc1ce5..1019638931 100644
--- a/Marlin/src/inc/Changes.h
+++ b/Marlin/src/inc/Changes.h
@@ -691,6 +691,8 @@
   #error "ANET_FULL_GRAPHICS_LCD_ALT_WIRING is now CTC_A10S_A13."
 #elif defined(Z_PROBE_END_SCRIPT)
   #error "Z_PROBE_END_SCRIPT is now EVENT_GCODE_AFTER_G29."
+#elif defined(WIFI_SERIAL)
+  #error "WIFI_SERIAL is now WIFI_SERIAL_PORT."
 #endif
 
 // Changes to Probe Temp Compensation (#17392)
diff --git a/Marlin/src/lcd/extui/mks_ui/mks_hardware.cpp b/Marlin/src/lcd/extui/mks_ui/mks_hardware.cpp
index eb9cac641a..f06ffcd89d 100644
--- a/Marlin/src/lcd/extui/mks_ui/mks_hardware.cpp
+++ b/Marlin/src/lcd/extui/mks_ui/mks_hardware.cpp
@@ -99,7 +99,9 @@
   #define ESTATE(S) (READ(S##_PIN) == S##_ENDSTOP_HIT_STATE)
 
   void test_gpio_readlevel_L() {
-    WRITE(WIFI_IO0_PIN, HIGH);
+    #if PIN_EXISTS(WIFI_IO0)
+      WRITE(WIFI_IO0_PIN, HIGH);
+    #endif
     delay(10);
     pw_det_sta = (READ(MKS_TEST_POWER_LOSS_PIN) == LOW);
     pw_off_sta = (READ(MKS_TEST_PS_ON_PIN) == LOW);
@@ -132,7 +134,9 @@
   }
 
   void test_gpio_readlevel_H() {
-    WRITE(WIFI_IO0_PIN, LOW);
+    #if PIN_EXISTS(WIFI_IO0)
+      WRITE(WIFI_IO0_PIN, LOW);
+    #endif
     delay(10);
     pw_det_sta = (READ(MKS_TEST_POWER_LOSS_PIN) == HIGH);
     pw_off_sta = (READ(MKS_TEST_PS_ON_PIN) == HIGH);
@@ -169,7 +173,9 @@
   void init_test_gpio() {
     endstops.init();
 
-    SET_OUTPUT(WIFI_IO0_PIN);
+    #if PIN_EXISTS(WIFI_IO0)
+      SET_OUTPUT(WIFI_IO0_PIN);
+    #endif
 
     #if PIN_EXISTS(MT_DET_1)
       SET_INPUT_PULLUP(MT_DET_1_PIN);
diff --git a/Marlin/src/lcd/extui/mks_ui/wifi_module.cpp b/Marlin/src/lcd/extui/mks_ui/wifi_module.cpp
index 122712e9e1..46ba860239 100644
--- a/Marlin/src/lcd/extui/mks_ui/wifi_module.cpp
+++ b/Marlin/src/lcd/extui/mks_ui/wifi_module.cpp
@@ -1920,7 +1920,9 @@ void mks_esp_wifi_init() {
   SET_OUTPUT(WIFI_RESET_PIN);
   WIFI_SET();
   SET_OUTPUT(WIFI_IO1_PIN);
-  SET_INPUT_PULLUP(WIFI_IO0_PIN);
+  #if PIN_EXISTS(WIFI_IO0)
+    SET_INPUT_PULLUP(WIFI_IO0_PIN);
+  #endif
   WIFI_IO1_SET();
 
   esp_state = TRANSFER_IDLE;
diff --git a/Marlin/src/lcd/extui/mks_ui/wifi_upload.cpp b/Marlin/src/lcd/extui/mks_ui/wifi_upload.cpp
index 2d4d19e7a2..3ce8bb42ec 100644
--- a/Marlin/src/lcd/extui/mks_ui/wifi_upload.cpp
+++ b/Marlin/src/lcd/extui/mks_ui/wifi_upload.cpp
@@ -650,12 +650,14 @@ void resetWiFiForUpload(int begin_or_end) {
   //#if 0
   uint32_t start = getWifiTick();
 
-  if (begin_or_end == 0) {
-    SET_OUTPUT(WIFI_IO0_PIN);
-    WRITE(WIFI_IO0_PIN, LOW);
-  }
-  else
-    SET_INPUT_PULLUP(WIFI_IO0_PIN);
+  #if PIN_EXISTS(WIFI_IO0)
+    if (begin_or_end == 0) {
+      SET_OUTPUT(WIFI_IO0_PIN);
+      WRITE(WIFI_IO0_PIN, LOW);
+    }
+    else
+      SET_INPUT_PULLUP(WIFI_IO0_PIN);
+  #endif
 
   WIFI_RESET();
   while (getWifiTickDiff(start, getWifiTick()) < 500) { /* nada */ }
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h
index b8ff3262c8..ae4ee3268e 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_E3P.h
@@ -201,10 +201,14 @@
   #define WIFI_IO1_PIN                      PC7
   #define WIFI_RESET_PIN                    PE9
 
+  //
+  // MKS Testing for code in lcd/extui/mks_ui
+  //
   #if ENABLED(MKS_TEST)
     #define MKS_TEST_POWER_LOSS_PIN         PA2   // PW_DET
     #define MKS_TEST_PS_ON_PIN              PB0   // PW_OFF
   #endif
+
 #else
   //#define POWER_LOSS_PIN                  PA2   // PW_DET
   //#define PS_ON_PIN                       PB2   // PW_OFF
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
index 0738afd80e..ea82c13fba 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_NANO_V2.h
@@ -228,10 +228,14 @@
   #define WIFI_IO1_PIN                      PC7
   #define WIFI_RESET_PIN                    PE9
 
+  //
+  // MKS Testing for code in lcd/extui/mks_ui
+  //
   #if ENABLED(MKS_TEST)
     #define MKS_TEST_POWER_LOSS_PIN         PA2   // PW_DET
     #define MKS_TEST_PS_ON_PIN              PB2   // PW_OFF
   #endif
+
 #else
   //#define POWER_LOSS_PIN                  PA2   // PW_DET
   //#define PS_ON_PIN                       PB2   // PW_OFF
diff --git a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_PRO.h b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_PRO.h
index 545b73cf02..d5689c1e71 100644
--- a/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_PRO.h
+++ b/Marlin/src/pins/stm32f1/pins_MKS_ROBIN_PRO.h
@@ -41,6 +41,15 @@
 //
 #define DISABLE_DEBUG
 
+//
+// Onboard I2C EEPROM
+//
+#define IIC_BL24CXX_EEPROM                // Use I2C EEPROM onboard IC (AT24C04C, Size 4K, PageSize 16B)
+#define MARLIN_EEPROM_SIZE                0x1000  // 4K
+#define IIC_EEPROM_SDA                      PB7
+#define IIC_EEPROM_SCL                      PB6
+#define EEPROM_DEVICE_ADDRESS             0xA0
+
 //
 // SPI
 //
@@ -403,3 +412,13 @@
   #define SPI_FLASH_MISO_PIN                PB14
   #define SPI_FLASH_MOSI_PIN                PB15
 #endif
+
+//
+// MKS WIFI pins
+//
+#if ENABLED(MKS_WIFI_MODULE)
+  #define WIFI_RESET_PIN                    PA5
+  #define WIFI_SERIAL_PORT                     1  // USART1
+  #define WIFI_IO1_PIN                      PC7
+  #define WIFI_IO0_PIN                      -1    // N.C.
+#endif
diff --git a/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_V2.h b/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_V2.h
index c5c79311e3..12d3947b99 100644
--- a/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_V2.h
+++ b/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_V2.h
@@ -51,7 +51,7 @@
 //
 // MKS WIFI MODULE
 //
-//#define WIFI_SERIAL 1// USART1
+//#define WIFI_SERIAL_PORT                     1  // USART1
 #if ENABLED(MKS_WIFI_MODULE)
   #define WIFI_IO0_PIN                      PB14  // MKS ESP WIFI IO0 PIN
   #define WIFI_IO1_PIN                      PB15  // MKS ESP WIFI IO1 PIN
diff --git a/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_common.h b/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_common.h
index 4965029927..e96a679360 100644
--- a/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_common.h
+++ b/Marlin/src/pins/stm32f4/pins_MKS_MONSTER8_common.h
@@ -217,9 +217,6 @@
   #define KILL_PIN_STATE                    HIGH
 #endif
 
-// Random Info
-#define USB_SERIAL                          -1    // USB Serial
-
 /**
  *                  ------                                      ------
  *   (BEEPER) PB2  | 1  2 | PE10 (BTN_ENC)    (SPI1 MISO) PA6  | 1  2 | PA5 (SPI1 SCK)
diff --git a/Marlin/src/pins/stm32f4/pins_MKS_ROBIN_NANO_V3_common.h b/Marlin/src/pins/stm32f4/pins_MKS_ROBIN_NANO_V3_common.h
index 0b36730467..050c8f2424 100644
--- a/Marlin/src/pins/stm32f4/pins_MKS_ROBIN_NANO_V3_common.h
+++ b/Marlin/src/pins/stm32f4/pins_MKS_ROBIN_NANO_V3_common.h
@@ -195,25 +195,27 @@
   #define KILL_PIN_STATE                    HIGH
 #endif
 
-// Random Info
-#define USB_SERIAL              -1  // USB Serial
-#define WIFI_SERIAL              3  // USART3
-#define MKS_WIFI_MODULE_SERIAL   1  // USART1
-#define MKS_WIFI_MODULE_SPI      2  // SPI2
-
 #ifndef SDCARD_CONNECTION
   #define SDCARD_CONNECTION              ONBOARD
 #endif
 
-// MKS WIFI MODULE
+//
+// MKS WiFi Module
+//
 #if ENABLED(MKS_WIFI_MODULE)
   #define WIFI_IO0_PIN                      PC13
   #define WIFI_IO1_PIN                      PC7
   #define WIFI_RESET_PIN                    PE9
+  #define MKS_WIFI_MODULE_SERIAL               1  // USART1
+  #define MKS_WIFI_MODULE_SPI                  2  // SPI2
+#else
+  #define WIFI_SERIAL_PORT                     3  // USART3
 #endif
 
-// MKS TEST
-#if ENABLED(MKS_TEST)
+//
+// MKS Testing for code in lcd/extui/mks_ui
+//
+#if ALL(TFT_LVGL_UI, MKS_TEST)
   #define MKS_TEST_POWER_LOSS_PIN           PA13  // PW_DET
   #define MKS_TEST_PS_ON_PIN                PB2   // PW_OFF
 #endif