My company provides me with a Lenovo T530 that is a pretty nice piece of gear (what they provided is actually a seriously nice hunk of goodness – but that is just my opinion – others might think differently). However, the 250GB SSD is a tad small. Thinking to get around the storage limitation, I noted that I did not ever use the DVD drive, so how can I re-purpose that drive bay?
I found myself a spare 2.5 inch HDD sitting around my office, and a low-cost UltraBay adapter on eBay (http://www.ebay.com/itm/221069776771?ssPageName=STRK:MEWNX:IT&_trksid=p3984.m1497.l2649) and I now have 500GB of secondary storage on board. And it hotswaps. Sweet!
I assume that this will work with the 420, 430, and 520 series as well. http://www.thinkwiki.org/wiki/Ultrabay - pay attention to the type of UltraBay your laptop has and the feature set matrix.