those things use custom made Mother Boards thou so they are pretty useless... the Dell ones atlease for the dimension H,L,D,T series are made by
palo alto products.com They don't look good, but I reckon they are nice and pratical...they are almost tool less...1 screw to remove a HDD, not edges to cut yourself with.....easy to work with..but the best thing is that they are sheilded very well...magnitically as well as sound...