diff --git a/device-types/Eltex/MES3324F.yaml b/device-types/Eltex/MES3324F.yaml
index ec89e109f..779b655f9 100644
--- a/device-types/Eltex/MES3324F.yaml
+++ b/device-types/Eltex/MES3324F.yaml
@@ -19,56 +19,56 @@ module-bays:
     position: '2'
 interfaces:
   - name: gigabitethernet1/0/1
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/2
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/3
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/4
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/5
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/6
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/7
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/8
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/9
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/10
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/11
-    type: 1000base-t
+    type: 1000base-x-sfp
     description: comboport 1000BASE-T / 1000BASE-X
   - name: gigabitethernet1/0/12
-    type: 1000base-t
+    type: 1000base-x-sfp
     description: comboport 1000BASE-T / 1000BASE-X
   - name: gigabitethernet1/0/13
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/14
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/15
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/16
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/17
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/18
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/19
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/20
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/21
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/22
-    type: 1000base-t
+    type: 1000base-x-sfp
   - name: gigabitethernet1/0/23
-    type: 1000base-t
+    type: 1000base-x-sfp
     description: comboport 1000BASE-T / 1000BASE-X
   - name: gigabitethernet1/0/24
-    type: 1000base-t
+    type: 1000base-x-sfp
     description: comboport 1000BASE-T / 1000BASE-X
   - name: tengigabitethernet1/0/1
     type: 10gbase-x-sfpp