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what kind of riser u use for conf with 4+ gpu?
when i connected my 1x it got burned

Are you using 2 or more PSUs???

yes why?

Read this:
https://litecointalk.org/index.php?topic=9707.0

and this:
http://forum.feathercoin.com/index.php?topic=2193.0

You need to cut the cable in side B that burns in your powered risers if using 2 PSUs.

Cheers

tnx ^_^
btw i solved with this problem but now i have another... 6 gpu (280x) -> only 5 detected on windows