diff --git a/ibm_vpd_app.cpp b/ibm_vpd_app.cpp
index 47ad4fc..0185739 100644
--- a/ibm_vpd_app.cpp
+++ b/ibm_vpd_app.cpp
@@ -40,6 +40,7 @@
 static const deviceTreeMap deviceTreeSystemTypeMap = {
     {RAINIER_2U, "conf@aspeed-bmc-ibm-rainier.dtb"},
     {RAINIER_4U, "conf@aspeed-bmc-ibm-rainier-4u.dtb"},
+    {RAINIER_1S4U, "conf@aspeed-bmc-ibm-rainier-1s4u.dtb"},
     {EVEREST, "conf@aspeed-bmc-ibm-everest.dtb"}};
 
 /**
@@ -871,7 +872,8 @@
         }
         string imValStr = oss.str();
 
-        if (imValStr == RAINIER_4U) // 4U
+        if ((imValStr == RAINIER_4U) || // 4U
+            (imValStr == RAINIER_1S4U))
         {
             target = INVENTORY_JSON_4U;
         }