diff --git a/configurations/Rainier 1S4U Chassis.json b/configurations/Rainier 1S4U Chassis.json
new file mode 100644
index 0000000..b381585
--- /dev/null
+++ b/configurations/Rainier 1S4U Chassis.json
@@ -0,0 +1,17 @@
+{
+    "Exposes": [
+        {
+            "Name": "Compatible System",
+            "Type": "IBMCompatibleSystem",
+            "Names": [
+                "ibm,rainier-1s4u",
+                "ibm,rainier"
+            ]
+        }
+    ],
+    "Name": "Rainier 1S4U Chassis",
+    "Probe": [
+        "com.ibm.ipzvpd.VSBP({'IM': [80, 0, 16, 2]})"
+    ],
+    "Type": "Chassis"
+}
diff --git a/configurations/Rainier 4U Chassis.json b/configurations/Rainier 4U Chassis.json
index cd22108..814aa9a 100644
--- a/configurations/Rainier 4U Chassis.json
+++ b/configurations/Rainier 4U Chassis.json
@@ -11,9 +11,7 @@
     ],
     "Name": "Rainier 4U Chassis",
     "Probe": [
-        "com.ibm.ipzvpd.VSBP({'IM': [80, 0, 16, 0]})",
-        "OR",
-        "com.ibm.ipzvpd.VSBP({'IM': [80, 0, 16, 2]})"
+        "com.ibm.ipzvpd.VSBP({'IM': [80, 0, 16, 0]})"
     ],
     "Type": "Chassis"
 }
diff --git a/meson.build b/meson.build
index 8e15733..ffe3d09 100644
--- a/meson.build
+++ b/meson.build
@@ -110,6 +110,7 @@
     'PSSF222201A.json',
     'Rainier 2U Chassis.json',
     'Rainier 4U Chassis.json',
+    'Rainier 1S4U Chassis.json',
     'R1000 Chassis.json',
     'R2000 Chassis.json',
     'SAS Module.json',
diff --git a/schemas/IBM.json b/schemas/IBM.json
index b4fa9b0..84f9cd4 100644
--- a/schemas/IBM.json
+++ b/schemas/IBM.json
@@ -85,6 +85,7 @@
                         "enum": [
                             "ibm,everest",
                             "ibm,rainier-2u",
+                            "ibm,rainier-1s4u",
                             "ibm,rainier-4u",
                             "ibm,rainier"
                         ]