HP BL685C - Manual (Page 23)

Setup 23
8. Install the server blade.
CAUTION: To prevent improper cooling and thermal damage, do not operate the server blade
or the enclosure unless all hard drive and device bays are populated with either a component
or a blank.
9. Install blanks in any empty bays:
a. Locate the coupler plate that ships with the server blade.
b. Install the coupler plate on top of the blank, and then slide the coupler plate forward until it locks
into place.