I am in USA ,I can't input chinese now. My computer is DELL Alienware M15x,when I am in my home,the better graphic card actives when I put the plug in the Errr....My english is poor,I put the plug in the stuff on the wall.But now when I took of the plug,the better graphic card actives,(you know,there is two in side.GT9400M and GTX260M),when I put the plug in,the shitter graphic card actives.So how can I switch it ?
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