SoundGraph Hummin’ 3.03 Quick Manual page 6

Remove the 5.25" disk drive bay from the drive bay support by releasing 4 screws.
4. Remove drive bay support
Remove the drive bay support from the enclosure by releasing 4 screws (B type).
5. Remove screw set for assembly
Remove the screw set for assembly placed on backside of the front panel.
6. Mount Bracket on Mainboard
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