June 26, 2007, Dell released the new Inspiron desktop series as a replacement to the Dell Dimension chain. The Inspiron marks Dell’s return to a MicroATX case and motherboard with one exception: the I/Opanel is not removable. As a result, motherboard upgrades are nearly impossible without modifying the case.
Launched online on November 12, 2009, the Inspiron 400, more commonly known as the Inspiron Zino HD is an Ultra Small Form Factor desktop like the Studio Hybrid. It is in an 8 by 8 form factor and has a similar form factor to the Mac Mini and computers made by Shuttle. There are several customer reports about devices tending to overheat and shutting down randomly.