diff --git a/data/mappings/defaults.json b/data/mappings/defaults.json
index d3643fede8e..3d3d915c0e5 100644
--- a/data/mappings/defaults.json
+++ b/data/mappings/defaults.json
@@ -2,16 +2,19 @@
     "development_board": {
         "promicro": {
             "processor": "atmega32u4",
-            "bootloader": "caterina"
+            "bootloader": "caterina",
+            "pin_compatible": "promicro"
         },
         "elite_c": {
             "processor": "atmega32u4",
-            "bootloader": "atmel-dfu"
+            "bootloader": "atmel-dfu",
+            "pin_compatible": "promicro"
         },
         "proton_c": {
             "processor": "STM32F303",
             "bootloader": "stm32-dfu",
-            "board": "QMK_PROTON_C"
+            "board": "QMK_PROTON_C",
+            "pin_compatible": "promicro"
         }
     }
 }
\ No newline at end of file
diff --git a/data/mappings/info_rules.json b/data/mappings/info_rules.json
index f03cadcd44f..237e9f10246 100644
--- a/data/mappings/info_rules.json
+++ b/data/mappings/info_rules.json
@@ -19,6 +19,7 @@
     "MCU": {"info_key": "processor", "warn_duplicate": false},
     "MOUSEKEY_ENABLE": {"info_key": "mouse_key.enabled", "value_type": "bool"},
     "NO_USB_STARTUP_CHECK": {"info_key": "usb.no_startup_check", "value_type": "bool"},
+    "PIN_COMPATIBLE": {"info_key": "pin_compatible"},
     "SPLIT_KEYBOARD": {"info_key": "split.enabled", "value_type": "bool"},
     "SPLIT_TRANSPORT": {"info_key": "split.transport.protocol", "to_c": false},
     "WAIT_FOR_USB": {"info_key": "usb.wait_for", "value_type": "bool"}
diff --git a/data/schemas/keyboard.jsonschema b/data/schemas/keyboard.jsonschema
index 3e8574ceadb..6be1f840b86 100644
--- a/data/schemas/keyboard.jsonschema
+++ b/data/schemas/keyboard.jsonschema
@@ -16,6 +16,10 @@
             "type": "string",
             "enum": ["promicro", "elite_c", "proton_c"]
         },
+        "pin_compatible": {
+            "type": "string",
+            "enum": ["promicro"]
+        },
         "processor": {
             "type": "string",
             "enum": ["cortex-m0", "cortex-m0plus", "cortex-m3", "cortex-m4", "MKL26Z64", "MK20DX128", "MK20DX256", "MK66FX1M0", "STM32F042", "STM32F072", "STM32F103", "STM32F303", "STM32F401", "STM32F405", "STM32F407", "STM32F411", "STM32F446", "STM32G431", "STM32G474", "STM32L412", "STM32L422", "STM32L432", "STM32L433", "STM32L442", "STM32L443", "GD32VF103", "WB32F3G71", "atmega16u2", "atmega32u2", "atmega16u4", "atmega32u4", "at90usb162", "at90usb646", "at90usb647", "at90usb1286", "at90usb1287", "atmega32a", "atmega328p", "atmega328", "attiny85", "unknown"]