HP Part # 507750-B21，<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>New</li><li>HP ISS 507750-B21</li><li>HP ISS 507750-B21 500GB 3G SATA 7 2K 2 5in MDL</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41ITkN-Xg8L.jpg" noproxy>