With SSD prices continuing to get lower and lower, the adoption rate of SSD's for both home and business use is starting to greatly increase. Although their price to gigabytes ratio still isn't that of a mechanical drive, their capacities are continuing to grow and their performance is simply unmatched. The majority of solid state drives use the 2.5" form factor; since a large amount of space isn't needed for their compact internals. This poses one problem - hardware compatibility. All my hot swap bays in my server only hold 3.5" drives, same with the hot swap bay in my desktop PC. Unless your PC case is fairly recent, it also probably lacks a dedicated SSD installation location. These same struggles also apply to those who want to use a regular 2.5" hard drive in place of a 3.5" drive for less heat and power consumption.
A few months back we saw the Silverstone SDP09 - an innovative 2.5" to 3.5" drive converter that sells for under $20 CDN. For marginally more than $20 CDN, you may wish to look at something like I have here today. The Icy Dock MB982SP-1S is a fully enclosed, military grade 2.5" to 3.5" drive converter. The MB982SP-1S offers some great innovations over Silverstone's product which may help deal with users in hot-swap environments, or those wishing to tackle the heat that comes with a mechanical 2.5" drive.