Can you tell me what generation disk trays are used in the CSE-747TG-R1K28B-SQ chassis
(SuperWorkstation 7047AX-72RF, We have of these systems on order)

I'm looking at the possibility of using 2.5 drives, as-needed. and so, I wondered
if something like the MCP-220-00043-0N (2.5 Hard Disk Drive Tray In 4th Generation 3.5 Hot Swap Tray) might work. (which is stated as being for Gen 4 trays).