Check this out
- Thread starter UriA702
- Start date
Has nothing to do with wires or dust. If it didnt have the covering on that one, the way its set up it would just pull air throught the fan straight out through the vents and not cool anything. With the covering it forces the air to flow across the heatsinks to the other end of the P/S and out cooling the heatsinks and circut board
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You will also notice the side of the supply where the harness sits just happens to be the same as where the insert is seen. Other supplies seeing large bottom fans will lack the plastic plate seen there. Those also have heatsinks! They're simply put together better to start with! 
(Gee? If you don't have a plastic plate in your supply the heatsinks will cook!
paranoia!)
(Gee? If you don't have a plastic plate in your supply the heatsinks will cook!
paranoia!)
Actually its a good idea. With out it the fan just blows into the bottom (turbulence) till it finds it way out the back under pressure. With it the air has somewhat of a flow across the board to the back vents.
When seeing a plate like that is there you generally have to assume multiple application as the thought. Using a plastic plate saves on cost for seeing different things done without the need for some type of funneling and a method to see the harness kept down away from a large fan.
You can see how the wires could easily spring up since there's no plastic tie downs seen for those. A plastic plated won't see sharp edges like a metal bracket solving one problem along with being a non conductive material. Air flow is directed by cutting 1/2 of the open space the fan is directed at. Then take a look at a larger supply seeing larger sinks to see why you would need a different method for any control over the air flow.
You can see how that differs where the air flow is pulled straight across from an intake to rear exhaust rather then bottom fan being focused into a narrow area for the smaller sinks seen on a low power supply. Dust is still the leading enemy however where the plastic plate would seem to deflect air flow from one side as well as focusing air flow to the other since that saves on the cost of adding in any filters.
With a large open space inside that serves another purpose of ressing down somewhat over the harness as well to keep anything from springing up when any tugging is seen on the harness during installation. When intentionally seeing that added in they were looking at a few things that could do for them like cost cutting on materials.
You can see how the wires could easily spring up since there's no plastic tie downs seen for those. A plastic plated won't see sharp edges like a metal bracket solving one problem along with being a non conductive material. Air flow is directed by cutting 1/2 of the open space the fan is directed at. Then take a look at a larger supply seeing larger sinks to see why you would need a different method for any control over the air flow.
You can see how that differs where the air flow is pulled straight across from an intake to rear exhaust rather then bottom fan being focused into a narrow area for the smaller sinks seen on a low power supply. Dust is still the leading enemy however where the plastic plate would seem to deflect air flow from one side as well as focusing air flow to the other since that saves on the cost of adding in any filters.
With a large open space inside that serves another purpose of ressing down somewhat over the harness as well to keep anything from springing up when any tugging is seen on the harness during installation. When intentionally seeing that added in they were looking at a few things that could do for them like cost cutting on materials.