These came from A&M university when they upgraded their equipment. They have been tested and work properly. They do not include hard drives, but do come with the hard drive brackets to put the hard in them. I have a number of these, but they are all in similar condition to the one that is in the listing's pictures, so you will receive one very similar to it.BuffaloHD-Q2.0TSU2/R5
Features and BenefitsHigh PerformanceFour High Speed 7200 RPM Hard Drives
Hardware RAID SupportFour Operating Models: JBOD, RAID 0, 1 and 5Automatic RAID RebuildingEasy-to-Use Windows Utility for Changing Modes
Simple Install and ManagementEasy Setup Does Not Require DriversSimple Plug-n-Play USB 2.0 and eSATA ConnectionsAuto Power Feature Turns on and off Automatically with your ComputerMinimal Power ConsumptionsRemoveable and Replaceable FanNear Silent Operation
Secure Backup SolutionSecureLockware Software for Windowsj PC Encrypts Your DataMemeo AutoBackup Software for Windows PCs
Below is a link to the