Password protection.

Weak software bundle.

As long as you're willing to download your own U3 apps, the Store 'n' Go will serve you well.

Rack mountable; supports additional drives via FireWire.

Large footprint; supports additional drives via USB 1.1; not a print server; 25-user limit; no logging or reporting features.

This large-footprint NAS device supports file sharing for Windows, Linux, and Mac OS as well as via HTTP and FTP.

Offers connectivity via Ethernet and 802.11g wireless networking; very quiet when operating; expandable via USB 2.0.

Offers neither share-level nor user-level security; uses WEP instead of WPA.

The Iomega NAS 100d is the only device in this roundup to offer wireless networking connectivity. But this functionality has to be weighed against outdated wireless security and a complete lack of data security.