T420 HDD LED lit Optical Drive

Running Windows 8 Enterprise.  The machine has all up-to-date Lenovo drivers and patches.  When the optical drive goes into sleep mode, the HDD LED will stay continuously lit.  Wake up the optical drive and the HDD LED functions as designed; when the optical drive goes to sleep issue persists.
Any thoughts?

Unplug the unpowered devices from the IDE chain, or supply power to them.
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