Be aware that removing the optical drive requires almost a complete tear down of the machine. Likewise, the OD is under the primary keyboard area, so there's no real place to cut through and put in ALS sensors. As for the HD, you'd be looking to find a cable thats going to bridge mini ATA to the connector on the logic board. That may or may not be easy. However, for what its worth, FoxConn (Hon Hai) makes the cables smile