ATEN CS-88A - Manual (Page 36)

Stacking and Rack Mounting
M Stacking
CS-88A devices can be stacked one on top of the other using the stacking
brackets that come already attached to the unit.
Note that there is a top and bottom half to each bracket. The top half has a
convex surface; the bottom half has a concave surface. Line up the four
bottom brackets of the top unit with the four top brackets of the bottom unit;
then fit the top unit down onto the bottom unit.
2002-12-27
32 CS-88A User Manual