September 15, 201510 yr The two PCIe slots are labeled: PCI-E 3.0 X8 (IN X 16) PCI-E 2.0 X4 (IN X The values between () puzzle me. I want to buy a new adapter card with two external SATA ports and at least two internal SATA ports. All ports must work in parallel. What 'x' value is relevant? X8/X4 or X16/X8? Thanks in advance.
September 15, 201510 yr The two PCIe slots are labeled: PCI-E 3.0 X8 (IN X 16) PCI-E 2.0 X4 (IN X The values between () puzzle me. I want to buy a new adapter card with two external SATA ports and at least two internal SATA ports. All ports must work in parallel. What 'x' value is relevant? X8/X4 or X16/X8? Thanks in advance. It means that a PCIe-16 slot is electrically a x8 slot and the PCI-e8 slot is electrically a x4 slot.
September 16, 201510 yr Author Call me stupid but I don't get it. I can use only a x8 card in the x16 slot? Why is it called x16? Thanks in advance.
September 16, 201510 yr No -- you can use any card you want in the x16 slot => an x1, x2, x4, x8, or an x16 card. ... and you can use any x1, x2, x4, or x8 card in an x8 slot [You can actually use an x16 card in an x8 slot IF the end of the slot is open (some slots are "open ended" to allow this] => but I don't believe that's the case with this board. The specifications for your board show that it has an x16 slot and an x8 slot; but that the x16 slot only has 8 active lanes (i.e. it's electrically x8) and the x8 slot only has 4 active lanes (i.e. it's electrically x4). This means, for example, that if you plug an x16 card into the x16 slot, it will operate at x8 => but it will work just fine. Ditto the x8 slot => if you plug an x8 card in it, it will work fine, but with only 4 active lanes (i.e. at x4).
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