diff --git a/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3413xs+.yml b/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3413xs+.yml
index 324e4260..bd1d59e8 100644
--- a/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3413xs+.yml
+++ b/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3413xs+.yml
@@ -23,11 +23,8 @@ platform: "bromolow"
 unique: "synology_bromolow_rs3413xs+"
 serial:
   prefix:
-    - "1130"
-    - "1230"
-    - "1330"
-    - "1430"
-  middle: "LWN"
+    - "0000"
+  middle: "XXX"
   suffix: "numeric"
 dom: 1
 dt: false
diff --git a/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3618xs.yml b/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3618xs.yml
index 38afab16..481e128b 100644
--- a/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3618xs.yml
+++ b/files/board/arpl/overlayfs/opt/arpl/model-configs/RS3618xs.yml
@@ -24,11 +24,8 @@ platform: "broadwell"
 unique: "synology_broadwell_rs3618xs"
 serial:
   prefix:
-    - "1130"
-    - "1230"
-    - "1330"
-    - "1430"
-  middle: "ODN"
+    - "0000"
+  middle: "XXX"
   suffix: "alpha"
 dom: 2
 dt: false
diff --git a/files/board/arpl/overlayfs/opt/arpl/model-configs/SA3400D.yml.disabled b/files/board/arpl/overlayfs/opt/arpl/model-configs/SA3400D.yml.disabled
index 3c5ff747..cca49726 100644
--- a/files/board/arpl/overlayfs/opt/arpl/model-configs/SA3400D.yml.disabled
+++ b/files/board/arpl/overlayfs/opt/arpl/model-configs/SA3400D.yml.disabled
@@ -26,8 +26,8 @@ platform: "broadwellntbap"
 unique: "synology_broadwellntbap_sa3400d"
 serial:
   prefix:
-    - "0000"
-  middle: "XXX"
+    - "2350"
+  middle: "W8R"
   suffix: "alpha"
 dom: 1
 dt: false