HDD Hard Drive Caddy Tray for ThinkPad X300 X301 S70

Before you buy this...Be aware of a few facts. First, standard 2.5 inch hard drives will not work in this caddy. Only the ultrathin ones will fit. That means .4mm, despite what it might say about accepting .7mm. Second, it isn't the simple plug and play unit that you have used in other IBM's and Lonovos. It may, or may not (mine didn't) recognize the hard drive. This has to do with a conflicting set of bridges, one in the laptop and another in the caddy, that may not interact properly. A good tech can fix this, if he knows what he's looking for, just don't expect a simple plug and play unit.