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Discussion Starter · #1 ·
Hi everyone, I just have a little confusion.

I'm adding a USB 3.0 PCI-E card to my comp. (USB 3.0 PCI-E - Cavalry)

I'm running a Gigabyte GA-P55M-UD2 (rev. 1.0) mobo. (GIGABYTE - Motherboard - Socket 1156 - GA-P55M-UD2 (rev. 1.0)).
It has 4 expansions: 2 PCI, 1 PCIe x16 running at x16, 1 PCIe x16 running at x4. I think i'm using the x16 for a graphics card, and 1 PCI for a wi-fi card.


The part that I'm getting says it is a PCI-Express (maybe 2.0, not sure b/c of different listings). But looking at the picture, the connectors don't fit the leftover PCI-e slot that I have (the x4 appears to look the same as the x16). I thought the "x" type is the length of the slot. The 3.0 card's connectors are very few.

So, my question is that will the card work in the current x4 slot that I have even though there will be 'open' connectors? How can I tell if my PCI-e x4 is 2.0 compatible? Also, will I need extra power to the card as well? It doesn't seem like it, but I'm not sure.

Thanks in advance!
 

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The expansion card you have is PCI-E X1. Your Mobo does not have a PCI-E X1 slot.
Your wi-fi card is most likely PCI.
 

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Discussion Starter · #4 ·
Ok, thanks. I think it should be compatible in the PCIe x4 slot. I think the rule is that 'lower' numbers can work in higher slots, but not vice versa. Its odd that the 2nd PCIe slot is made as an x16, but is only functional for x4. Hmm.

I think the only issue that might come up is whether the slot is PCIe 2.0 or not. I'll see if I can find it in the documentation somewhere.


Thanks again!
 
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