Hi Joy,
This has nothing to do with the controller hardware, but with the software, running on the controller. Check this website to see what is the last version, which supports those AP's
http://www.arubanetworks.com/support-services/end-of-life/#AccessPoints
When you have a "TBD" the AP is fully supported by all software versions. (Only those features will work, which can run on the AP hardware).
BR
Florian