diff --git a/device/arista/x86_64-arista_7280r4_32qf_32df/Arista-7280R4-32QF-32DF-64O/gearbox_config.json b/device/arista/x86_64-arista_7280r4_32qf_32df/Arista-7280R4-32QF-32DF-64O/gearbox_config.json
index 58246a8e8ba..addd9a482e8 100644
--- a/device/arista/x86_64-arista_7280r4_32qf_32df/Arista-7280R4-32QF-32DF-64O/gearbox_config.json
+++ b/device/arista/x86_64-arista_7280r4_32qf_32df/Arista-7280R4-32QF-32DF-64O/gearbox_config.json
@@ -11,6 +11,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio0_0_0/0"
     },
@@ -25,6 +26,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio1_0_0/0"
     },
@@ -39,6 +41,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio2_0_0/0"
     },
@@ -53,6 +56,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio3_0_0/0"
     },
@@ -67,6 +71,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio4_0_0/0"
     },
@@ -81,6 +86,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio5_0_0/0"
     },
@@ -95,6 +101,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio6_0_0/0"
     },
@@ -109,6 +116,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio7_0_0/0"
     },
@@ -123,6 +131,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio8_0_0/0"
     },
@@ -137,6 +146,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio9_0_0/0"
     },
@@ -151,6 +161,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio10_0_0/0"
     },
@@ -165,6 +176,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio11_0_0/0"
     },
@@ -179,6 +191,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio12_0_0/0"
     },
@@ -193,6 +206,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio13_0_0/0"
     },
@@ -207,6 +221,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio14_0_0/0"
     },
@@ -221,6 +236,7 @@
       "phy_access": "mdio",
       "bus_id": 0,
       "context_id": 1,
+      "macsec_supported": false,
       "macsec_ipg": 352,
       "hwinfo": "mdio15_0_0/0"
     }