9036 Questions

What is the allowable cable length from the RJ45 outlets of your 9036 unit
to a terminal? I would be using Cat 5 type cabling.
While looking at the brochure for the Model 9036 hub, it indicates a twinax connection from an AS/400 to a S.I. Tech 9036 or 2836. From there a fiber link goes to a S.I. Tech 9036 hub. Why is the 9036 shown twice? Are they separate devices?