[duke900ssd]

I do not know the device you wish to connect but I do know that the 520 ports are not either RS232 or 422 compatible.

They are dedicated AIX console ports and if you wish to connect a RS device, or UPS for example, then you will require a RS232 - 422 PCI adapter.

	AIX AIX (Advanced Interactive eXecutive) is the name given to a series of proprietary operating systems sold by IBM for several of its computer system platforms.