Over the past few years we have looked at several Tagan power supplies such as the TurboJet 1100W and BZ 900W. However, their product selection is no longer limited to power supplies and they now produce several different desktop cases as well as a growing selection of storage devices. These storage products are part of their Icy Box family, which consists of 2.5" and 3.5" hard drive enclosures as well as NAS (Network Attached Storage) devices. One of these products is the Tagan Icy Box IB-NAS4220-B, which is a two-drive SATA NAS with support for RAID 0/1/JBOD. What makes this device more interesting to us is that it runs Linux and Tagan is more than happy to let its customers modify the unit and write their own software.