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I have a laptop that has an USB controller and an SD card which I believe connected to USB3.

I need to do some development on a Linux version 2.6 which doesn't support USB3.

Can I use USB 3 controller in USB 2 mode? I am not interested in supporting USB 3 on my linux, just be able to read/write to my SD card (or any Flash drive) using my Linux system.

I am using Linux in a virtual environment.

share|improve this question
Current version of the Linux kernel is 3.8, 2.6.x is long gone... unless you are using the 2.6.32 or 2.6.34 longterm branch. But newfangled stuff such as USB 3 is unlikely to show up there. What exactly do you want to develop on/in an obsolete kernel version, and why? – vonbrand Mar 12 '13 at 16:14

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