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Front USB Ports don't work with new case

M

mickdob

Junior Member
I upgraded to a new case and moved everything into the new case. Now the front USB ports with this new case have no power. The wires for USB front ports come in a unified connector so it is not a case of attaching the USB wires incorrectly. It's not the motherboard because the front USB ports worked when it was in the old case. I even exchanged this new case thinking the first one was defective, but same result.

Is there perhaps an incompatibility between newer case wiring for front USB and older motherboards (Epox 8rda) that I am not aware of?
 
what type of mainboard are you using now? I remember once I had the same problem, and it turned out the connectors that I thought were USB headers were really 1394 (Firewire) headers. Obviously the ports wouldn't work if this were the case.
 
It is defintely a USB header- 8 pins plus the dummy one. And it is unified one piece USB connector from the case. It can only go in one way. And when the motherboard was in the older case, the front USB worked.
However the case's unified USB plug is wired starngely compared to when you get a case with 8 individidual USB plugs, so I figure it must have something to do with why the EPOS 8RGA+ board might have trouble with it
 
Your board should be marked to show the correct ways to connect the headers. Your connectors should also be marked. Make sure the markings on the connectors match the diagram on your board. If they don't match, thats your problem.
 
USB Pinout info
And check all the way at the bottom of the page too - there's a chart there that gives the standard wire colors for each pin, as well as the function.

Sometimes cables are wired wrong from the factory. My favorite thing of this sort is floppy drives that are keyed wrong - you need to break something or use a little force to plug the data cable in properly, because they screwed up which side pin 1 is supposed to be on.
 
THe unified connector has 4 holes in one row and 5 in the other, so there is only one way to fit this onto the USB headers on the board
 
Check the motherboard manual - it should have pinouts for the USB header. Make sure that the wiring on the plug matches with the board's pinouts. I've had to rewire USB plugs like that already. Different motherboards can be keyed differently, usually meant to work with a bundled USB bracket.
 
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