diff --git a/adafruit_platformdetect/board.py b/adafruit_platformdetect/board.py
index 5c1ade88..bb0cbea4 100644
--- a/adafruit_platformdetect/board.py
+++ b/adafruit_platformdetect/board.py
@@ -118,6 +118,8 @@ def id(self) -> Optional[str]:
             board_id = boards.FTDI_FT232H
         elif chip_id == chips.FT2232H:
             board_id = boards.FTDI_FT2232H
+        elif chip_id == chips.FT4232H:
+            board_id = boards.FTDI_FT4232H
         elif chip_id == chips.APQ8016:
             board_id = boards.DRAGONBOARD_410C
         elif chip_id in (chips.T210, chips.T186, chips.T194, chips.T234):
@@ -1133,6 +1135,7 @@ def os_environ_board(self) -> bool:
         def lazily_generate_conditions():
             yield self.board.FTDI_FT232H
             yield self.board.FTDI_FT2232H
+            yield self.board.FTDI_FT4232H
             yield self.board.MICROCHIP_MCP2221
             yield self.board.BINHO_NOVA
             yield self.board.GREATFET_ONE
@@ -1216,6 +1219,11 @@ def ftdi_ft2232h(self) -> bool:
         """Check whether the current board is an FTDI FT2232H."""
         return self.id == boards.FTDI_FT2232H
 
+    @property
+    def ftdi_ft4232h(self) -> bool:
+        """Check whether the current board is an FTDI FT4232H."""
+        return self.id == boards.FTDI_FT4232H
+
     @property
     def microchip_mcp2221(self) -> bool:
         """Check whether the current board is a Microchip MCP2221."""
diff --git a/adafruit_platformdetect/chip.py b/adafruit_platformdetect/chip.py
index faa47ed1..1f1d88d1 100644
--- a/adafruit_platformdetect/chip.py
+++ b/adafruit_platformdetect/chip.py
@@ -84,6 +84,18 @@ def id(
                     )
                 self._chip_id = chips.FT2232H
                 return self._chip_id
+            if os.environ.get("BLINKA_FT4232H"):
+                from pyftdi.usbtools import UsbTools
+
+                # look for it based on PID/VID
+                count = len(UsbTools.find_all([(0x0403, 0x6011)]))
+                if count == 0:
+                    raise RuntimeError(
+                        "BLINKA_FT4232H environment variable "
+                        + "set, but no FT4232H device found"
+                    )
+                self._chip_id = chips.FT4232H
+                return self._chip_id
             if os.environ.get("BLINKA_MCP2221"):
                 import hid
 
diff --git a/adafruit_platformdetect/constants/boards.py b/adafruit_platformdetect/constants/boards.py
index 392b4100..b44d6056 100644
--- a/adafruit_platformdetect/constants/boards.py
+++ b/adafruit_platformdetect/constants/boards.py
@@ -162,6 +162,7 @@
 
 FTDI_FT232H = "FTDI_FT232H"
 FTDI_FT2232H = "FTDI_FT2232H"
+FTDI_FT4232H = "FTDI_FT4232H"
 DRAGONBOARD_410C = "DRAGONBOARD_410C"
 
 SIFIVE_UNLEASHED = "SIFIVE_UNLEASHED"
diff --git a/adafruit_platformdetect/constants/chips.py b/adafruit_platformdetect/constants/chips.py
index 7bbf19f9..f6200d5c 100644
--- a/adafruit_platformdetect/constants/chips.py
+++ b/adafruit_platformdetect/constants/chips.py
@@ -38,6 +38,7 @@
 GENERIC_X86 = "GENERIC_X86"
 FT232H = "FT232H"
 FT2232H = "FT2232H"
+FT4232H = "FT4232H"
 HFU540 = "HFU540"
 C906 = "C906"
 JH71X0 = "JH71X0"