Ap-93 are end-of-sale, the direct equivalent would be a ap-103. .
Aruba will not support the AP-93 after a specific date specified below.
http://www.arubanetworks.com/support-services/end-of-life-products/I suggest you speak to your channel manager or Aruba SE to get you what you need for your design.
You may want to use a 7210 with ap-103s based on your deployment
#7210