Controlling USB connection to computer

[tyguy2]

Hello everyone,

I'm working on a project where I need to be able to cut off a USB device (both 2.0 and 3.0) from a computer then reconnect it electronically. Mechanically speaking, it would be the equivalent of unplugging the USB device then plugging it back in later. I was wondering if I needed to use a controller IC to achieve this, or if I could just use BJT's or perhaps relays/ optoisolators to control the connections to the computer. Thanks in advance!

[Skashkash]

You'd want a USB switch /mux ic.  3.0 complicates things a bit.

But something like this chip.

https://www.fairchildsemi.com/datasheets/FU/FUSB340.pdf


Quick edit,
 If this is just for a one off,  it might be possible to hack a USB 3.0 hub by interrupting the power to the hub.
 

[tyguy2]

So I think I'll use
http://ww1.microchip.com/downloads/en/DeviceDoc/00001725D.pdf
This for the USB 2.0 and:
https://www.fairchildsemi.com/datasheets/FU/FUSB340.pdf
This for the USB 3.1

Will I just be able to attach both chips directly to a USB female connector, or will I need a way to differentiate between 2.0 and 3.1? (picture attached)