Is it possible to use the 8046B-TRLF system with 2.5 inch hard drive?
http://www.supermicro.nl/products/system/4U/8046/SYS-8046B-TRLF.cfm?parts=SHOW
It looks to me that inside the chassis there is 1 unit of CSE-M35T
http://www.supermicro.com/products/accessories/mobilerack/CSE-M35T-1.cfm
So the 3.5" converted to 2.5" hot-swap HDD Tray p/n MCP-220-00043-0N should fit?
You should use MCP-220-00080-0B for 2.5" HDD.