JLCooper sBOX8D - Manual (Page 6)

Installation
eBOX
Installation of the sBOX with an eBOX is straightforward. Simply
connect the sBOX to the eBOX using the supplied cable as shown in the
image below.
Expansion
eBOX
Aux
Bank
1 2 3
Expansion
sBOX8
Connecting an eBOX to an sBOX8
6
GPI Output