except it is a USB 3 converter which would be needed...
Why not moving the whole pc away (near where you plan to put the cards) and buy and long monitor cable ?
It's more of an issue of space, if it were a normal case then maybe ;-)
I may be able to spin the case round and a 2m might just reach.... hmm
Ooh and here's a usb 3 version
http://www.amazon.co.uk/gp/aw/d/B0095EFXMC