I just wanted to chime in here and let you know that I recently purchased a NAS . The model is Office NAS 350 or anas350 made by Airlink101
http://www.airlink101.com/products/anas350.html
After only 3 days or so with it , and only 2 real days working with it, I seem pretty satisfied. What I REALLY LOVE about it, is that although nothing is mentioned anywhere about it I was able to configure my Samsung ML 1710 Laser printer on one of the available USB ports and set up a LPR - TCP/IP port on the windows boxes. Easy as pie, but I am a little bit geeky.
Also note that the device DOES NOT support writing to NTFS formatted drives.
It does support SATA or ATA drive installed.
I have had some issues with windows authenticating to it when I choose the secure mode, but I have not devoted too much time to that yet either. Windows 2000 complains that the credentials supplied (to log into the NAS Conflict with another set of credentials. Admittedly , it has been a long time since I set up windows networking and there have been a few changes since.
I think I paid about $100 USD for it (in Mexico, so I am sure it can be had cheaper elsewhere) . That was a good deal considering that it saved me the cost of a print server as well, and I have already connected various External drives to the USB ports with no issues except when copying Multiple files from the NAS to the USB connected drive, I got an error stating the file already existed.
The one touch copy feature also works well and I backed up an entire 30 GIG USB drive while I turned my computer off and slept.
On an additional note yesterday I purchased a TVR Media Center ACU-MPE35
http://translate.google.com/translate?u=http%3A%2F%2Facteck.com%2F_es%2Fprod_detail.php%3Fid_prod%3DACU-MPE35%26cat%3DGabinetes%20Disco%20Duro&langpair=es|en&hl=en&ie=UTF-8
(page translated by google from Spanish, which is all I can find on it) .
I ran into this thread looking for a way to make this latest unit Ethernet. You may want to have a look at
http://www.everythingusb.com/synology_usb_station.html
which is available in Canada at:
http://www.tigerdirect.ca/applications/SearchTools/item-details.asp?EdpNo=2329545&CatId=207
you may also try Tigerdirect.com for sale in the USA.
I also saw a 4 port model somewhere that was another brand. (maybe USBMan.com?)
If I had to do it over again., I would not give up the Office NAS no matter what, and Ill take the print server functionality as a free bonus!
Someone ought to make low cost single port devices to connect USB storage devices to ethernet. It seems even less challenging than USB print servers, so I am not sure what the issue is.
Mark