Brand: Qnap, Model: KEY-HDDTRAY-01, Product Type: Hard drive security key, Included: 2 x QNAP HDD Tray Key KEY-HDDTRAY-01, Warranty: 01 Year Limited Warranty The QNAP HDD Tray Key KEY-HDDTRAY-01 is a hard drive security key that is specifically designed in order to be used for tower NAS.