Intel OPEN (660) 120/140/150 II - Manual (Page 45)

User Manual version 2.1
OPEN (660) 120/140/150
3-35
If the system enclosure is not limited in thickness, then to
mount the OPEN system on the system enclosure’s front
panel is recommended for easy installation and
maintenance. However, if the system enclosure is limited
in space, then it is suggested to mount the OPEN system
on the system enclosure’s back panel to increase the
installation yield rate.