[xfce] USB3 Express Card that works with Ubuntu???

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http://ubuntuforums.org – Hi all, Well, I bought a neat external HDD dual-dock, got it home and realised I'd screwed up: it was the USB3 version, not the e-SATA/USB version I was after. So after a bit of peeking around I've seen some USB3 express cards which I'm thinking might work. I am an express card virgin so have little idea. It is a powered dock but figuring USB3 port will need some power. How will this drain on the laptop power supply? Bottom Line: If anyone has one of these devices working with Ubuntu (I'm using 10.04 LTS with a Toshiba Satellite Pro L510), please share your thoughts. Are these things viable (Hardware)