USB 3.0 PCI cards: a few questions!

I'm looking to give my PC USB 3.0 support, for which I'll use a USB 3.0 PCI card. But what's the difference between them all? Some have two ports, some have four, some need a molex power supply, some have a odd three pin power thing, some have no power. What's the difference between them all? Is there anything I should know?
3 answers Last reply
More about cards questions
  1. I would shy away from any that did not have a molex for power. Without it they have to pass 5v power from the PCI slot which it is using itself. Granted the PCI bus can supply 25w and the usb power spec is 2.5W (5v @ 0.5a) with 4 ports that 10w. I'd rather not risk buring out something on my motherbd.

    What youl should look into more is which chipset is it using and keep an understanding that PCI is limited to 133MB/s between ALL pci devices. So dont expect 100+MB/s from an external HDD/SDD
  2. OK, getting a powered one sounds safer.

    From what you're saying, these PCI cards don't perform to full USB 3.0 speeds?
  3. What's your option on 4 port USB 3.0 cards guys? Do they perform the same as a 2 port? All the 4 port ones seem to have VIA chipsets, are these a good chipset?
Ask a new question

Read More

Power Supplies PCI USB3 Power Components