New graphics card not being detected

TimmyDosBueno

Reputable
Jan 8, 2015
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(Before you read on, let me just tell you that i am new to the world of building pc's) I bought this PC last year, its an Asus M11BB series desktop with windows 7 home edition. Since ive bought it I have added 8 more gbs of ram because it only had 4 and recently i bought a new AMD radeon Sapphire dual-x r9 270x 4 gb graphics card along with an evga 850 watt power supply.
My PC came with the amd a8-6500 processer with integrated amd radeon HD 8570D graphics. But for some reason my new graphics card isn't being detected. The fans are going and everything.

Also, my graphics card has 2 6 pin ports on it and I was curious if I should plug them both in? I thought one was to setup another card for crossfire?