Network ports are usually gray in color and are wider than a telephone jack. They have a small white label indicating the port number.
Network port locations are marked by 
in the images below.
Abel-Sandoz:
Double:
Triple:
Harper-Schramm-Smith:
Double:
Triple:
Cather-Pound:
Neihardt:
Single/Double in most sections:
Single/Double in Piper:
Selleck:
Single/Double:
