The 1:4 HDD Duplicator Deluxe is constructed in a light weight and sturdy aluminum chassis with a handle for easy transportation. You can make as many as four copies of 3.5" or 2.5" SATA hard drives or a mixture of both, all at one time. Just like other models in the Addonics duplicator family, there is no computer or software required to operate the 1:4 HDD Duplicator Deluxe. To make copies of hard drive, simply open the doors on the drive bays, load your master hard drive and the four target hard drives that are of equal or larger capacity than the master drive, lock the drive door and push the copy button to start the duplication process. You can load or unload the drive just like using VHS cassette without any special tool. The 1:4 HDD duplicator is an ideal equipment for small to medium production projects, data distribution, data migration or drive back up.