WHats a native Usb port?

I'm asking becuase I dont want to buy something that doesnt work with normal usb ports. I mean it say native usb port so it must be different form normal usb ports right? help? these are the usb ports I have. http://images.search.yahoo.com/images/view?back=http%3A%2F%2Fimages.search.yahoo.com%2Fsearch%2Fimages%3Fei%3DUTF-8%26p%3DUSB%2520port%26fr2%3Dtab-web%26fr%3Dhp-pvdt&w=312&h=199&imgurl=www.uberreview.com%2Fwp-content%2Fuploads%2F4_port_usb_switch_blue.jpg&rurl=http%3A%2F%2Ffeeds.uberreview.com%2F%7Er%2FUberReview%2F%7E3%2F291378276%2Fusb-4-port-data-switch-shares-a-device-with-multiple-machines.htm&size=13k&name=4+port+usb+switc...&p=USB+port&oid=5cc675395093e246&no=3&tt=415988&sigr=13oou203j&sigi=120b53d0n&sigb=12ph3rb0h