diff --git a/src/main/java/dev/galacticraft/machinelib/api/block/entity/MachineBlockEntity.java b/src/main/java/dev/galacticraft/machinelib/api/block/entity/MachineBlockEntity.java
index b5744ab..38daea9 100644
--- a/src/main/java/dev/galacticraft/machinelib/api/block/entity/MachineBlockEntity.java
+++ b/src/main/java/dev/galacticraft/machinelib/api/block/entity/MachineBlockEntity.java
@@ -23,6 +23,7 @@
 package dev.galacticraft.machinelib.api.block.entity;
 
 import dev.galacticraft.machinelib.api.machine.MachineStatus;
+import dev.galacticraft.machinelib.api.machine.configuration.IOFace;
 import dev.galacticraft.machinelib.api.menu.MachineMenu;
 import dev.galacticraft.machinelib.api.storage.MachineEnergyStorage;
 import dev.galacticraft.machinelib.api.storage.MachineFluidStorage;
@@ -31,6 +32,7 @@
 import dev.galacticraft.machinelib.api.storage.slot.FluidResourceSlot;
 import dev.galacticraft.machinelib.api.storage.slot.ItemResourceSlot;
 import dev.galacticraft.machinelib.api.transfer.ResourceFlow;
+import dev.galacticraft.machinelib.api.transfer.ResourceType;
 import dev.galacticraft.machinelib.api.util.BlockFace;
 import dev.galacticraft.machinelib.api.util.StorageHelper;
 import dev.galacticraft.machinelib.impl.Constant;
@@ -103,17 +105,20 @@ protected MachineBlockEntity(BlockEntityType<? extends MachineBlockEntity> type,
     }
 
     public static <T extends MachineBlockEntity> void registerProviders(@NotNull BlockEntityType<? extends T> type) {
-        EnergyStorage.SIDED.registerForBlockEntity((blockEntity, direction) -> {
-            if (direction == null) return blockEntity.energyStorage().getExposedStorage(ResourceFlow.BOTH);
-            return blockEntity.energyStorage().getExposedStorage(blockEntity.getIOConfig().get(Objects.requireNonNull(BlockFace.from(blockEntity.getBlockState(), direction))).getFlow());
+        EnergyStorage.SIDED.registerForBlockEntity((machine, direction) -> {
+            if (direction == null) return machine.energyStorage().getExposedStorage(ResourceFlow.BOTH);
+            IOFace ioFace = machine.getIOConfig().get(Objects.requireNonNull(BlockFace.from(machine.getBlockState(), direction)));
+            return ioFace.getType().willAcceptResource(ResourceType.FLUID) ? machine.energyStorage().getExposedStorage(ioFace.getFlow()) : null;
         }, type);
-        ItemStorage.SIDED.registerForBlockEntity((blockEntity, direction) -> {
-            if (direction == null) return blockEntity.itemStorage().getExposedStorage(ResourceFlow.BOTH);
-            return blockEntity.itemStorage().getExposedStorage(blockEntity.getIOConfig().get(Objects.requireNonNull(BlockFace.from(blockEntity.getBlockState(), direction))).getFlow());
+        ItemStorage.SIDED.registerForBlockEntity((machine, direction) -> {
+            if (direction == null) return machine.itemStorage().getExposedStorage(ResourceFlow.BOTH);
+            IOFace ioFace = machine.getIOConfig().get(Objects.requireNonNull(BlockFace.from(machine.getBlockState(), direction)));
+            return ioFace.getType().willAcceptResource(ResourceType.ITEM) ? machine.itemStorage().getExposedStorage(ioFace.getFlow()) : null;
         }, type);
-        FluidStorage.SIDED.registerForBlockEntity((blockEntity, direction) -> {
-            if (direction == null) return blockEntity.fluidStorage().getExposedStorage(ResourceFlow.BOTH);
-            return blockEntity.fluidStorage().getExposedStorage(blockEntity.getIOConfig().get(Objects.requireNonNull(BlockFace.from(blockEntity.getBlockState(), direction))).getFlow());
+        FluidStorage.SIDED.registerForBlockEntity((machine, direction) -> {
+            if (direction == null) return machine.fluidStorage().getExposedStorage(ResourceFlow.BOTH);
+            IOFace ioFace = machine.getIOConfig().get(Objects.requireNonNull(BlockFace.from(machine.getBlockState(), direction)));
+            return ioFace.getType().willAcceptResource(ResourceType.ENERGY) ? machine.fluidStorage().getExposedStorage(ioFace.getFlow()) : null;
         }, type);
     }
 
diff --git a/src/main/java/dev/galacticraft/machinelib/api/config/Config.java b/src/main/java/dev/galacticraft/machinelib/api/config/Config.java
index 3342133..7e76e5e 100644
--- a/src/main/java/dev/galacticraft/machinelib/api/config/Config.java
+++ b/src/main/java/dev/galacticraft/machinelib/api/config/Config.java
@@ -61,14 +61,14 @@ static Config loadFrom(File file) {
     void setEnableColoredVanillaFluidNames(boolean enabled);
 
     /**
-     * {@return what unit fluids should be displayed in}
+     * {@return the unit that fluids should be displayed in}
      */
     FluidUnits fluidUnits();
 
     /**
-     * Sets what unit fluids should be displayed in.
+     * Sets the unit that fluids should be displayed in.
      *
-     * @param units what unit fluids should be displayed in
+     * @param units the unit that fluids should be displayed in
      */
     void getFluidUnits(FluidUnits units);