diff --git a/src/mainboard/google/rex/Kconfig b/src/mainboard/google/rex/Kconfig
index 9c755085ba..bbd20e3212 100644
--- a/src/mainboard/google/rex/Kconfig
+++ b/src/mainboard/google/rex/Kconfig
@@ -107,14 +107,14 @@ config MAINBOARD_FAMILY
 	default "Google_Ovis" if BOARD_GOOGLE_BASEBOARD_OVIS
 
 config MAINBOARD_PART_NUMBER
-	default "Rex" if BOARD_GOOGLE_REX0 || BOARD_GOOGLE_REX_EC_ISH
+	default "Rex" if BOARD_GOOGLE_REX0 || BOARD_GOOGLE_REX_EC_ISH || BOARD_GOOGLE_REX4ES
 	default "Screebo" if BOARD_GOOGLE_SCREEBO
 	default "Karis" if BOARD_GOOGLE_KARIS
 	default "Ovis" if BOARD_GOOGLE_OVIS
 
 config VARIANT_DIR
 	string
-	default "rex0" if BOARD_GOOGLE_REX0 || BOARD_GOOGLE_REX_EC_ISH
+	default "rex0" if BOARD_GOOGLE_REX0 || BOARD_GOOGLE_REX_EC_ISH || BOARD_GOOGLE_REX4ES
 	default "screebo" if BOARD_GOOGLE_SCREEBO
 	default "karis" if BOARD_GOOGLE_KARIS
 	default "ovis" if BOARD_GOOGLE_OVIS
@@ -139,7 +139,7 @@ config OVERRIDE_DEVICETREE
 
 config DRIVER_TPM_I2C_BUS
 	hex
-	default 0x4 if BOARD_GOOGLE_REX0 || BOARD_GOOGLE_SCREEBO || BOARD_GOOGLE_REX_EC_ISH || BOARD_GOOGLE_OVIS
+	default 0x4 if BOARD_GOOGLE_REX0 || BOARD_GOOGLE_SCREEBO || BOARD_GOOGLE_REX_EC_ISH || BOARD_GOOGLE_OVIS || BOARD_GOOGLE_REX4ES
 
 config DRIVER_TPM_I2C_ADDR
 	hex
diff --git a/src/mainboard/google/rex/Kconfig.name b/src/mainboard/google/rex/Kconfig.name
index 94ae1a059f..eea2a528f2 100644
--- a/src/mainboard/google/rex/Kconfig.name
+++ b/src/mainboard/google/rex/Kconfig.name
@@ -20,3 +20,7 @@ config BOARD_GOOGLE_REX_EC_ISH
 config BOARD_GOOGLE_OVIS
 	bool "-> Ovis"
 	select BOARD_GOOGLE_BASEBOARD_OVIS
+
+config BOARD_GOOGLE_REX4ES
+	bool "-> Rex4ES"
+	select BOARD_GOOGLE_MODEL_REX