This is 3.5 inch tray/caddy, not 2.5 inch

Compatible Lenovo Part Numbers:
31052813, 31050780, 03X3969, 03X3835

Works with the following Lenovo servers.*
RD330, RD430, RD530, RD630, RD830
RD340, RD440, RD540, RD640
TS430, TS530, TS440
TD330, TD340
T168

*List is by no means complete. Please check pictures of tray to see if it is what you have.

Package Content:
2 * Lenovo 3.5" Tray Caddy
8 * Mounting Screws