My Dell T3500 has a 0XPDFK mother board with PCIe 2.0 sockets and I wish to fit a USB 3 card to it. I am undecided whether to purchase a card capable of 5Gbps or 10Gbps. I have a spare PCIe x4 socket suitable for a card but am unsure if I will get the full bandwidth benefit as my motherboard is PCIe 2.0 rather than the PCIe 3.0 that the cards seem to rated at. Will USB 3 run slower due to the age of my motherboard?
I'm pretty sure you can use any smaller PCI-e devices in the x 16 slot, but where you may have another x16 card like a graphics card that needs a slot, it just is not necessary for a device like a usb card which is much better at home in a x4 or maybe x8 slot. I could be wrong but this is my understanding.
speedstep
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Posted July 6th, 2021 10:00
X4 slot will give very good bandwidth with expensive card.
https://eshop.macsales.com/item/Sonnet%20Technologies/USB3PRO4P10E/
X1 cheap cards will not.