To be specific, there are no "jumpers" already on a SATA drive, but they do have pins where one could be placed. Here is a picture example I found, you can see the pins here: http://www.vpsems.com/wp-content/uploads/2011/09/Sata-hard-drive.jpg Some drives like SeaGate and Toshiba (and other notebook sized drives) also have pins, but look like this instead: http://www.pacificgeek.com/productimages/xl/MK8034GSX-R.jpg http://homepages.nildram.co.uk/~chsmith/Clunk/Seagate%20Sata.jpg