• crossfiring makes all usb ports unless
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I recently got a 6970 reference card, Asus crosshair IV formula motherboard. I had an unlocked 6950 before so i decided to crossfire it. now crossfiring works fine i can run furmark for a about 30 minutes atm. BUT none of my usb ports work, only one of my front usb ports work. I mean work by detecting my mouse and keyboard, if i plug it into any other usb ports both the mouse and keyboard will recieve power (led lights on mouse goes on, keyboard reciever comes on) but none will work unless i plug it into the front usb port. if i use only one card both my keyboard and mouse will work fine in each usb port. any ideas what is causing this? I got the most recent drivers already. Specs: Phenom II x4 965 ASUS Crosshair IV Formula G.SKILL DDR3 RAM 1333mhz 9-9-9-24 AMD Radeon HD 6970 Sapphire Radeon HD 6950 (shader unlocked 880/1375) OCZ ZX Series 850W Powersupply [editline]9th August 2011[/editline] Also the 6950 uses a molex to 6pin adapter :P lost one of my cables [editline]9th August 2011[/editline] I somehow got it to work after replugging it many times. CASE CLOSE!
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