diff --git a/li/cil/oc/Items.scala b/li/cil/oc/Items.scala
index c25d198e7..69c18adf8 100644
--- a/li/cil/oc/Items.scala
+++ b/li/cil/oc/Items.scala
@@ -6,57 +6,58 @@ import net.minecraft.item.ItemStack
 import net.minecraftforge.oredict.OreDictionary
 
 object Items {
-  var multi: item.Delegator = null
+  var multi: item.Delegator = _
 
   // ----------------------------------------------------------------------- //
   // Tools
-  var analyzer: item.Analyzer = null
+  var analyzer: item.Analyzer = _
 
   // ----------------------------------------------------------------------- //
   // Memory
-  var ram1, ram2, ram3: item.Memory = null
+  var ram1, ram2, ram3: item.Memory = _
 
   // ----------------------------------------------------------------------- //
   // Storage
-  var floppyDisk: item.FloppyDisk = null
-  var hdd1, hdd2, hdd3: item.HardDiskDrive = null
+  var floppyDisk: item.FloppyDisk = _
+  var hdd1, hdd2, hdd3: item.HardDiskDrive = _
 
   // ----------------------------------------------------------------------- //
   // Cards
-  var gpu1, gpu2, gpu3: item.GraphicsCard = null
-  var lan: item.NetworkCard = null
-  var rs: item.RedstoneCard = null
-  var wlan: item.WirelessNetworkCard = null
+  var abstractBus: item.AbstractBusCard = _
+  var gpu1, gpu2, gpu3: item.GraphicsCard = _
+  var lan: item.NetworkCard = _
+  var rs: item.RedstoneCard = _
+  var wlan: item.WirelessNetworkCard = _
 
   // ----------------------------------------------------------------------- //
   // Upgrades
-  var upgradeCrafting: item.UpgradeCrafting = null
-  var upgradeGenerator: item.UpgradeGenerator = null
-  var upgradeNavigation: item.UpgradeNavigation = null
-  var upgradeSign: item.UpgradeSign = null
-  var upgradeSolarGenerator: item.UpgradeSolarGenerator = null
+  var upgradeCrafting: item.UpgradeCrafting = _
+  var upgradeGenerator: item.UpgradeGenerator = _
+  var upgradeNavigation: item.UpgradeNavigation = _
+  var upgradeSign: item.UpgradeSign = _
+  var upgradeSolarGenerator: item.UpgradeSolarGenerator = _
 
   // ----------------------------------------------------------------------- //
   // Crafting
-  var ironNugget: item.IronNugget = null
-  var cuttingWire: item.CuttingWire = null
-  var acid: item.Acid = null
-  var disk: item.Disk = null
+  var ironNugget: item.IronNugget = _
+  var cuttingWire: item.CuttingWire = _
+  var acid: item.Acid = _
+  var disk: item.Disk = _
 
-  var buttonGroup: item.ButtonGroup = null
-  var arrowKeys: item.ArrowKeys = null
-  var numPad: item.NumPad = null
+  var buttonGroup: item.ButtonGroup = _
+  var arrowKeys: item.ArrowKeys = _
+  var numPad: item.NumPad = _
 
-  var transistor: item.Transistor = null
-  var chip1, chip2, chip3: item.Microchip = null
-  var alu: item.ALU = null
-  var cpu: item.CPU = null
-  var cu: item.ControlUnit = null
+  var transistor: item.Transistor = _
+  var chip1, chip2, chip3: item.Microchip = _
+  var alu: item.ALU = _
+  var cpu: item.CPU = _
+  var cu: item.ControlUnit = _
 
-  var rawCircuitBoard: item.RawCircuitBoard = null
-  var circuitBoard: item.CircuitBoard = null
-  var pcb: item.PrintedCircuitBoard = null
-  var card: item.CardBase = null
+  var rawCircuitBoard: item.RawCircuitBoard = _
+  var circuitBoard: item.CircuitBoard = _
+  var pcb: item.PrintedCircuitBoard = _
+  var card: item.CardBase = _
 
   def init() {
     multi = new item.Delegator(Settings.get.itemId)
@@ -111,6 +112,8 @@ object Items {
     upgradeSign = new item.UpgradeSign(multi)
     upgradeNavigation = new item.UpgradeNavigation(multi)
 
+    abstractBus = new item.AbstractBusCard(multi)
+
     // ----------------------------------------------------------------------- //
 
     registerExclusive("nuggetIron", ironNugget.createItemStack())
diff --git a/li/cil/oc/common/Proxy.scala b/li/cil/oc/common/Proxy.scala
index 01a18804f..e577fe7e5 100644
--- a/li/cil/oc/common/Proxy.scala
+++ b/li/cil/oc/common/Proxy.scala
@@ -27,16 +27,17 @@ class Proxy {
     api.Driver.add(driver.block.CommandBlock)
     api.Driver.add(driver.block.NoteBlock)
 
-    api.Driver.add(driver.item.UpgradeCrafting)
+    api.Driver.add(driver.item.AbstractBusCard)
     api.Driver.add(driver.item.FileSystem)
-    api.Driver.add(driver.item.UpgradeGenerator)
-    api.Driver.add(driver.item.SolarGenerator)
     api.Driver.add(driver.item.GraphicsCard)
-    api.Driver.add(driver.item.UpgradeNavigation)
     api.Driver.add(driver.item.Memory)
     api.Driver.add(driver.item.NetworkCard)
-    api.Driver.add(driver.item.UpgradeSign)
     api.Driver.add(driver.item.RedstoneCard)
+    api.Driver.add(driver.item.UpgradeCrafting)
+    api.Driver.add(driver.item.UpgradeGenerator)
+    api.Driver.add(driver.item.UpgradeNavigation)
+    api.Driver.add(driver.item.UpgradeSign)
+    api.Driver.add(driver.item.UpgradeSolarGenerator)
     api.Driver.add(driver.item.WirelessNetworkCard)
 
     Recipes.init()
diff --git a/li/cil/oc/common/item/AbstractBusCard.scala b/li/cil/oc/common/item/AbstractBusCard.scala
new file mode 100644
index 000000000..0ad011cee
--- /dev/null
+++ b/li/cil/oc/common/item/AbstractBusCard.scala
@@ -0,0 +1,27 @@
+package li.cil.oc.common.item
+
+import cpw.mods.fml.common.Loader
+import java.util
+import li.cil.oc.Settings
+import li.cil.oc.util.Tooltip
+import net.minecraft.client.renderer.texture.IconRegister
+import net.minecraft.entity.player.EntityPlayer
+import net.minecraft.item.ItemStack
+
+class AbstractBusCard(val parent: Delegator) extends Delegate {
+  val unlocalizedName = "AbstractBusCard"
+
+  // TODO change when done
+  override val showInItemList = true // Loader.isModLoaded("StargateTech2")
+
+  override def tooltipLines(stack: ItemStack, player: EntityPlayer, tooltip: util.List[String], advanced: Boolean) {
+    tooltip.addAll(Tooltip.get(unlocalizedName))
+    super.tooltipLines(stack, player, tooltip, advanced)
+  }
+
+  override def registerIcons(iconRegister: IconRegister) = {
+    super.registerIcons(iconRegister)
+
+    icon = iconRegister.registerIcon(Settings.resourceDomain + ":card_abstract_bus")
+  }
+}
diff --git a/li/cil/oc/common/tileentity/AbstractBusAware.scala b/li/cil/oc/common/tileentity/AbstractBusAware.scala
index df86335b8..2d14e8490 100644
--- a/li/cil/oc/common/tileentity/AbstractBusAware.scala
+++ b/li/cil/oc/common/tileentity/AbstractBusAware.scala
@@ -1,12 +1,28 @@
 package li.cil.oc.common.tileentity
 
 import cpw.mods.fml.common.Optional
-import cpw.mods.fml.common.Optional.Interface
+import net.minecraft.item.ItemStack
 import stargatetech2.api.bus.IBusDevice
 
-@Optional(new Interface(iface = "stargatetech2.api.bus.IBusDevice", modid = "StargateTech2"))
-trait AbstractBusAware extends IBusDevice {
+@Optional.Interface(iface = "stargatetech2.api.bus.IBusDevice", modid = "StargateTech2")
+trait AbstractBusAware extends TileEntity with Inventory with IBusDevice {
   def getInterfaces(side: Int) = if (hasAbstractBusCard) Array(null) else null
 
+  def getXCoord = x
+
+  def getYCoord = y
+
+  def getZCoord = z
+
   protected def hasAbstractBusCard = false
+
+  override protected def onItemAdded(slot: Int, stack: ItemStack) {
+    super.onItemAdded(slot, stack)
+    // TODO if card wasn't present, send device added event
+  }
+
+  override protected def onItemRemoved(slot: Int, stack: ItemStack) {
+    super.onItemRemoved(slot, stack)
+    // TODO if no card is present anymore, send device removed event
+  }
 }
diff --git a/li/cil/oc/server/component/AbstractBus.scala b/li/cil/oc/server/component/AbstractBus.scala
index 288e14654..f9f887c83 100644
--- a/li/cil/oc/server/component/AbstractBus.scala
+++ b/li/cil/oc/server/component/AbstractBus.scala
@@ -62,9 +62,12 @@ class AbstractBus(val owner: tileentity.Computer) extends ManagedComponent with
   @LuaCallback("send")
   def send(context: Context, args: Arguments): Array[AnyRef] = {
     val target = args.checkInteger(0) & 0xFFFF
-    val data = ???
-    val packet = new BusPacketLIP(address, target.toShort)
-    // TODO
+    val data = args.checkTable(1)
+    val packet = new BusPacketLIP(address.toShort, target.toShort)
+    for ((key, value) <- data) {
+      packet.set(key.toString, value.toString)
+    }
+    // TODO generate metadata
     sendQueue += packet
     result(true)
   }
@@ -76,6 +79,7 @@ class AbstractBus(val owner: tileentity.Computer) extends ManagedComponent with
     busInterface.readFromNBT(nbt, "bus")
     isEnabled = nbt.getBoolean("enabled")
     address = nbt.getInteger("address") & 0xFFFF
+    // TODO load queue
   }
 
   override def save(nbt: NBTTagCompound) {
@@ -83,5 +87,6 @@ class AbstractBus(val owner: tileentity.Computer) extends ManagedComponent with
     busInterface.writeToNBT(nbt, "bus")
     nbt.setBoolean("enabled", isEnabled)
     nbt.setInteger("address", address)
+    // TODO save queue
   }
 }
diff --git a/li/cil/oc/server/driver/item/AbstractBusCard.scala b/li/cil/oc/server/driver/item/AbstractBusCard.scala
new file mode 100644
index 000000000..bfc9cda42
--- /dev/null
+++ b/li/cil/oc/server/driver/item/AbstractBusCard.scala
@@ -0,0 +1,20 @@
+package li.cil.oc.server.driver.item
+
+import cpw.mods.fml.common.Loader
+import li.cil.oc.Items
+import li.cil.oc.api.driver.Slot
+import li.cil.oc.common.tileentity
+import li.cil.oc.server.component
+import net.minecraft.item.ItemStack
+import net.minecraft.tileentity.{TileEntity => MCTileEntity}
+
+object AbstractBusCard extends Item {
+  def worksWith(stack: ItemStack) = isOneOf(stack, Items.abstractBus)
+
+  override def createEnvironment(stack: ItemStack, container: MCTileEntity) = container match {
+    case computer: tileentity.Computer if Loader.isModLoaded("StargateTech2") => new component.AbstractBus(computer)
+    case _ => null
+  }
+
+  def slot(stack: ItemStack) = Slot.Card
+}
diff --git a/li/cil/oc/server/driver/item/SolarGenerator.scala b/li/cil/oc/server/driver/item/UpgradeSolarGenerator.scala
similarity index 91%
rename from li/cil/oc/server/driver/item/SolarGenerator.scala
rename to li/cil/oc/server/driver/item/UpgradeSolarGenerator.scala
index 0998fe1f7..b8e89b469 100644
--- a/li/cil/oc/server/driver/item/SolarGenerator.scala
+++ b/li/cil/oc/server/driver/item/UpgradeSolarGenerator.scala
@@ -6,7 +6,7 @@ import li.cil.oc.server.component
 import net.minecraft.item.ItemStack
 import net.minecraft.tileentity.{TileEntity => MCTileEntity}
 
-object SolarGenerator extends Item {
+object UpgradeSolarGenerator extends Item {
   override def worksWith(stack: ItemStack) = isOneOf(stack, Items.upgradeSolarGenerator)
 
   override def createEnvironment(stack: ItemStack, container: MCTileEntity) = new component.UpgradeSolarGenerator(container)
diff --git a/stargatetech2/api/bus/BusPacketLIP.java b/stargatetech2/api/bus/BusPacketLIP.java
index 478f00635..f1237aba1 100644
--- a/stargatetech2/api/bus/BusPacketLIP.java
+++ b/stargatetech2/api/bus/BusPacketLIP.java
@@ -47,7 +47,7 @@ public final class BusPacketLIP extends BusPacket {
 		}
 	}
 	
-	protected BusPacketLIP(short sender, short target) {
+	public BusPacketLIP(short sender, short target) {
 		super(sender, target, true);
 	}