If you are in need of an extra USB slots, here we recommednd the Satechi 12 Port USB hub, which gives you an extra of 12 USB ports. This USB hub allows you to transfer or backup your MP3 files, digital photos and videos to your desktop or laptop at a speed of up to 480Mbps. The gadget is very easy to use, you just have to plugin and use it. The Satechi 12 USB hub is compatible with Windows 98SE /ME /2000 /XP /Vista /7, Mac OS 9.1 or above, Linux 2.4 or above. You can purchase it now at a discounted price through Amazon, for only $29.99.