diff --git a/device/mellanox/x86_64-nvidia_sn5600-r0/ACS-SN5600/hwsku.json b/device/mellanox/x86_64-nvidia_sn5600-r0/ACS-SN5600/hwsku.json
index 3593da62c767..bf02939aa411 100644
--- a/device/mellanox/x86_64-nvidia_sn5600-r0/ACS-SN5600/hwsku.json
+++ b/device/mellanox/x86_64-nvidia_sn5600-r0/ACS-SN5600/hwsku.json
@@ -193,7 +193,12 @@
             "default_brkout_mode": "1x800G[400G,200G,100G,50G,40G,25G,10G]"
         },
         "Ethernet512": {
-            "default_brkout_mode": "1x25G[10G]"
+            "default_brkout_mode": "1x25G[10G]",
+            "index": "65",
+            "lanes": "512",
+            "breakout_modes": {
+                "1x25G[10G]": ["etp65"]
+            }
         }
     }
 }
diff --git a/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-O128/hwsku.json b/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-O128/hwsku.json
index 52088a40302f..3a75b5238cfd 100644
--- a/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-O128/hwsku.json
+++ b/device/mellanox/x86_64-nvidia_sn5600-r0/Mellanox-SN5600-O128/hwsku.json
@@ -385,7 +385,12 @@
             "default_brkout_mode": "2x400G[200G,100G,50G,40G,25G,10G]"
         },
         "Ethernet512": {
-            "default_brkout_mode": "1x25G(1)[10G]"
+            "default_brkout_mode": "1x25G(1)[10G]",
+            "index": "65",
+            "lanes": "512",
+            "breakout_modes": {
+                "1x25G[10G]": ["etp65"]
+            }
         }
     }
 }
diff --git a/device/mellanox/x86_64-nvidia_sn5600-r0/platform.json b/device/mellanox/x86_64-nvidia_sn5600-r0/platform.json
index daa9d1231f3f..63ac2b855731 100644
--- a/device/mellanox/x86_64-nvidia_sn5600-r0/platform.json
+++ b/device/mellanox/x86_64-nvidia_sn5600-r0/platform.json
@@ -1245,13 +1245,6 @@
                 "2x400G[200G,100G,50G,40G,25G,10G]": ["etp64a", "etp64b"],
                 "4x200G[100G,50G,25G,10G]": ["etp64a", "etp64b", "etp64c", "etp64d"]
             }
-        },
-        "Ethernet512": {
-            "index": "65",
-            "lanes": "512",
-            "breakout_modes": {
-                "1x25G[10G]": ["etp65"]
-            }
         }
     }
 }