This high quality Removable ATA Hard Drive Drawer/Mobile Rack delivers a convenient ATA storage solution, allowing you to quickly swap ATA66/ATA100 and ATA133 hard drives in and out of a computer without having to open the computer case.Simply install the (included) drive bay into a 5.25in drive bay on the host computer, then mount a 3.5in ATA HDD in the (removable) caddy. Connecting the ATA hard drive to the computer is as easy as inserting the caddy into the drive bay, which can be locked to prevent unauthorized removal of the installed ATA drive.A practical, time-saving storage solution, the drive caddy features dual ball-bearing fans that help keep the enclosed drive cool, in turn helping to optimize operation. To prevent damage to the hard drive(s) while being transferred in and out of the computer, the drive caddy features shock absorbers and rubber cushioning that help limit vibration/shock to the drive, as well as a 3K insertion rating.