KeySpan 2-USB Port USB Internal Bus Port PCI Card<div style="text-align: left;"><strong>[Product Information]</strong><br><ul><li>Windows &amp; Mac Compatible</li><li>Adds two standard USB "A" ports to your Mac or PC</li><li>Delivers 12 Mbps data transfer rate</li><li>Supports up to 127 downstream USB devices.Compliant with OHCI and PCI 2.1 standards</li><li>Supplies 500mA power to each USB port</li></ul></div><img src="http://ecx.images-amazon.com/images/I/41SGYYH5M2L.jpg" noproxy>