this product works great for me and my laptop, I've used it a few times and the software that comes with it. the software will only work with the adapter but makes any SATA drive look like a USB drive.

http://www.newegg.com/Product/Product.aspx?Item=N82E16812161004&cm_re=apricorn_a dapter-_-12-161-004-_-
Product


copy your O/S to your new drive like the SSD using this software, it can resize partition if your new drive is larger than your old drive.
once that is done, swap drives out and then attempt your upgrade on the new drive, if it fails to upgrade properly you can ... start over with the old drive and make another copy or you can do a fresh install on the new drive and use the adapter to copy files off your old drive.