So just plug in an SD card, HDMI cable, LAN cable, USB cable, audio cable, and the power cable...and all your 5 cables are sticking out from the 4 sides of the board. How lame it is!
When you order a raspberry you get a bare panel, if you need some housing, you can easily search for boxes, cases one the internet...but still you have all sides spiked with cables....and that is what I wanted to fix.
Step 1: Extending inputs/outputs
Some people could solder, de-solder HDMI sockets, micro SD sockets...etc, and wire them again, but I could not. I just extended everything to the back with existing cables. It might look messy inside, but looks great from outside.
Designing the rear panel, it seamed obvious to me to use the side of the Raspberry PI where USB and the LAN outputs are, because they need to be hold strong and 2 outputs are on the same side. And in this case the SD card is on the front side. All the other connectors can be extended easily.
I searched first for solutions to extend the HDMI. First I though some 90 degree converters just simply turn the socket facing to the back. Ordered and tried the 90 degree adaptor I just realised that it turns completelly to the opposite way. Than I found this 20 cm long HDMI extension. After I received just twisted and fixed the cable to the board and I liked the result. The cable sit very tight so I dont think it will ever come out from the casing. For the audio and the video I just made short extension cables.
The power source is 5V and recommended 1.2 Amp. The Raspberry's power socket is now on the front on the panel, which is the worst place. I used a Micro USB pigtail cable to connect my new rear power point. Now I can use a standard 5V adaptor to power it up.
Finally all of the new extended sockets are on the rear side.