Get your NAS in gear with the 3.5” HDD Tray with Key Lock from QNAP. Fitting a 2.5” or 3.5” HDD or SSD, this drive tray is designed to work with TR-002, TR-004, TS-251+, and TS-451+ NAS arrays. Featuring a lock for added security, this drive tray comes with two keys, as well as mounting hardware for securing drives.