User`s manual

Hardware Installation
Intellio C320Turbo User's Manual 2-11
Mix of Various UART Modules
UART Modules with various functions are produced for different requirements, such
as RS-232/RS-422, female/male DB25 connector, isolation protection or surge
protection.
No matter what interfaces they use, any two UART Modules could be mixed
(connected) together freely depending on needs. For example, users may put 2 male
RS-232 UART Modules and 2 female RS-422 UART Modules together for application
consideration.