When the hardened drive has drives in it the front doesn't change to show that... mod bug I guess, probably because the block just got re-added.
Also, I'm not really happy with how the MEDrive Fixture looks... the drives look too square, but they don't render very well how they are previously and I guess I have to just sacrifice the style for getting it to work at all
Version: 2.2.68 2015-02-02
#Added: Hardened ME Drive, Fluid Vibration Chamber blocks and GUIs
*Tweaked: ME Drive Fixture so drives actually "fit" properly