2.Connect the main cable. The main cable connects the mouse cable (needed to use the remote control as a mouse) and serial cable (needed to use the ELP Link II software) from your Macintosh to the projector.
MAC serial 
cable
MAC mouse cable
main cable
a.Connect the small end of the main cable to the projector’s Mouse/Com 1 port. (Use the Mouse/Com 2 to connect a second computer.)
b.Connect the MAC mouse cable to the mouse terminal on the other end of the main cable.
18 | 1 • Installation |