Epson EMP 9000 - SXGA LCD Projector Owner's Manual page 40

Refer to this illustration while following the steps below.
1. Connect the small end of the main cable to the projector's
Mouse/Com 1 port. (Use the Mouse/Com 2 port to
connect a second computer.)
Mouse/Com 1 port
Mac mouse cable
(or USB mouse cable)
main cable
Mac serial cable
Connecting to a Computer 19