Brilliant! Found this by Googling for a replacement power button for my Lenovo Thinkpad W530, which has the same layout. Surprised and delighted to find this, and at such a low price. Otherwise I would have had to buy a whole new keyboard just to get the button. It is a tad thicker and *maybe* a tad larger than the original, so at first I thought it might not work, but no worries! I just had to spend a minute maneuvering it in place and then getting the button-row cover snapped back on. But once in place it's perfect -- actually better than the original in that it's clearly sturdier (but with no added strain on the board) and so should last longer. I got the black nylon plastic. Highly recommended. Thank you, asimplename01!!!