Prototype 4.0 available

Just before christmas we made the version 4.0 prototype. Some major improvements of the old version are:

Possible to add PCI / PCI-Express card. Not the biggest ones though since space is very limited. But our plan is to be able to fit any usual SATA PCI-card and some moderate graphics card.
Different colors. This time we made a prototype of four different colors and the front cover having the same color as the rest of the case
Testing air filter. Since the server will be on 24/7, you will get dust in it so we’re trying out a dust filter. However, this might stop the airflow a little bit and make the harddrives more hot. We will test this soon.
Better mounting for harddrives and other small changes to the actual mounting design

Here are some pictures: