The integral expansion ports on a control unit are located on the rear of the unit. An additional 4 expansion ports can be added to the front of the control unit by installing an IP500 4-Port Expansion card.
•Each external expansion module is supplied with a blue 1 meter (3'3'') expansion interconnect cable. This cable must be used when connecting to expansion ports on the rear of a control unit.
•When connecting to expansion ports on an IP500 4-Port Expansion card, a supplied yellow 2 meter (6'6") expansion interconnect cable can be used in place of the supplied blue cable. 4 Yellow cables are supplied with the IP500 4-Port Expansion card.
