There will be a DPN on it somewhere. Thats the part number.
Genuine Dell H7283 Blue Hard Drive Caddy
For Dimension E310, 3100, 9150, 9200, 5150, 5100, E510,
Optiplex GX520, GX620, 960, 320, 330, 360, 210L, 740, 745, 755, 760 SMT Systems
Precision, XPS, PowerEdge Small Mini-Tower Systems (SMT)
Compatible Dell Part Numbers: N218K, J844K, UJ528, U6436, RH991, YJ221, G8354
I don't own such a new system so I can't go open the cover and find out for sure.