Disk Manipulator now has a front texture and connected state

src/main/java/refinedstorage/block/BlockDiskManipulator.java

@@ -40,8 +40,13 @@ public class BlockDiskManipulator extends BlockNode {
         super.breakBlock(world, pos, state);
     }
 
+    @Override
+    public boolean hasConnectivityState() {
+        return true;
+    }
+
     @Override
     public EnumPlacementType getPlacementType() {
-        return null;
+        return EnumPlacementType.HORIZONTAL;
     }
 }

src/main/java/refinedstorage/tile/TileDiskManipulator.java

@@ -167,6 +167,11 @@ public class TileDiskManipulator extends TileNode implements IComparable, IFilte
         return RefinedStorage.INSTANCE.config.diskManipulatorUsage + upgrades.getEnergyUsage();
     }
 
+    @Override
+    public boolean hasConnectivityState() {
+        return true;
+    }
+
     @Override
     public void updateNode() {
         if (ticks % upgrades.getSpeed() != 0) {