PCIe 2.0 x 2 into PCIe 2.0 x16

A6TH

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Oct 16, 2013
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So, I'm buying ASUS Raidr Express and I want to plug it in ASUS Sabertooth Z87, but, it doesn't have PCIe 2.0 x 2 slot. So, can i plug it in longer PCIe 2.0 x16 slot?