diff --git a/conf/init.caiman.rc b/conf/init.caiman.rc
index c63cfa7d..215e60d2 100644
--- a/conf/init.caiman.rc
+++ b/conf/init.caiman.rc
@@ -79,3 +79,7 @@ on property:sys.boot_completed=1
 # it should be written by the system init.
 on property:ro.boot.hardware.sku=GWVK6
     setprop audio.camerasound.force true
+
+# Check serial no. from specific CM4 devices for audio.
+on property:ro.boot.serialno=*
+    setprop vendor.audio_hal.device.serialno ${ro.boot.serialno}
diff --git a/conf/init.komodo.rc b/conf/init.komodo.rc
index 51d7027f..97a6e229 100644
--- a/conf/init.komodo.rc
+++ b/conf/init.komodo.rc
@@ -83,3 +83,7 @@ on property:sys.boot_completed=1
 # it should be written by the system init.
 on property:ro.boot.hardware.sku=GQ57S
     setprop audio.camerasound.force true
+
+# Check serial no. from specific KM4 devices for audio.
+on property:ro.boot.serialno=*
+    setprop vendor.audio_hal.device.serialno ${ro.boot.serialno}
diff --git a/conf/init.tokay.rc b/conf/init.tokay.rc
index f0626726..99963f92 100644
--- a/conf/init.tokay.rc
+++ b/conf/init.tokay.rc
@@ -81,3 +81,7 @@ on fs
 # it should be written by the system init.
 on property:ro.boot.hardware.sku=G1B60
     setprop audio.camerasound.force true
+
+# Check serial no. from specific TK4 devices for audio.
+on property:ro.boot.serialno=*
+    setprop vendor.audio_hal.device.serialno ${ro.boot.serialno}