How can I determine if my Omni II series controller has flash memory or not? 
Answer: Flash memory controllers are distinctly different from non-flash controllers in the following:
Flash controllers have five (5) RS-232 connections in the upper left-hand corner of the controller. 
Flash controllers do not have a ROM chip in position “U29†on the PCB – this socket will appear as unpopulated. 
Flash controllers have two (2) jumpers labeled “JP10†and “JP15†located directly below the “U29†socket .