Hello,

I would like to upgrade from USB 2.0 to 3.0 on my Dell OptiPlex 790. I've mentioned this to several "tech savvy" individuals, and I wanted to get a clear picture of THINGS...

OptiPlex website (http://www.dell.com/support/troubleshooting/us/en/04/Servicetag/DSXZQW1?s=BIZ)
Service Tag: DSXZQW1

So I know I can purchase a "Rosewill 2-Port USB 3.0 PCI Express Card Model RC-505" and it will fit in one of my ports, but I've been told that I need USB 3.0 connections on the inside of my machine in order to get USB 3.0 speeds. Otherwise, my 3.0 ports would only run at 2.0 speeds. 

Is this true?
If it is, then what's the point of UPGRADING?

I have not purchased any products at this moment. That's a PCI Express card so will get the full speed.

What those other people are getting mixed up with is if you were to connect a USB 3.0 device to a 2.0 port.  That card contains a physical USB 3.0 controller chip, MUCH like you would find on many USB 3.0 enabled motherboards.In ADDITION to the above, they may mean that you won't get USB3 speeds from the front ports, which is true because a USB3 card doesn't upgrade the USB2 ports, just adds USB3 ports.Think of your new USB 3 card being as fast as PLUGGING in a standalone video card into a PCI-e slot. You're going to get really fast data transfers. Have fun!Thanks guys
I really appreciate the help

All of you get gold stars  Cool...can we turn them in for chocolate-chip cookies ? ?