point i/o website

hi good people, i know there if a website that you can add point i/o modules to and it will tell you if the powersupply is ok to run then or if you need a power extention unit. but i can not remember it does anyone know the website address?
thanks stu

Each PointIO adapter supply can drive up to 17 PointIO modules, and supply 10A of device power (limited by the external supply capacity). To go up to the maximum 63 modules, you need to add some adapter extension power supplies, like the 1734-EP24DC or 1734-EPAC.

http://literature.rockwellautomation.com/idc/groups/literature/documents/pp/1734-pp001_-en-p.pdf