IOGear GCS138 - Manual (Page 14)

Cascading MiniView™ Ultra units (continued)
Step 3.
Now, plug the male end of the video cable into the female video
port on the secondary MiniView™ Ultra’s console port.
Installation
12
Step 4.
Plug in the remaining PS/2 mouse and PS/2 keyboard connectors
into the keyboard and mouse ports on the secondary MiniView™
Ultra’s console port.