ElmoMC SimplIQ Digital Servo Drives-Whi-Trio Installation Guide - Manual (Page 15)

.6 Mounting the Trio
The Trio has been designed for two standard mounting options:

“Wall Mount” along the back (can also be mounted horizontally on a metal surface)
 “Book Shelf” along the side
M4 round head screws, one through each opening in the heat sink, are used to mount the
Trio (see the diagram below).
Figure 3-1: Mounting the Trio