I have two D510MO running the Centos ACID install - seems to work OK. The '510s are in Morex 5677 boxes with SSD's and power supplies from 12 VDC. I noticed two things: It seems like the fans want to run at the boot-up speed (default=50%). With the BIOS at the default value, the box gets warm to the touch. If you go into the BIOS and select 100% speed for the fans, the box runs nice and cool. I do not know if the fan would speed up eventually when things get hot - but why wait for that? These are very quiet fans even at full speed. The P/S In the Morex box is arranged so that the big 20-pin plug largely obstructs one of the fans. Since it is an exhaust fan, maybe this does not matter much. But it is really easy to rotate the P/S board 180 degrees and this seems to result in less obstruction of the fans. Final touch is to put some black tape on the vent holes next to the fans so that most of the air has to come from the other side of the box, rather than taking a short cut. Ken KE2N