Unhappy Samsung Captivate USB 1.0 only

Hey everyone! i did a quick search and found nothing on this issue... but my captivate when i plug it into my PC's usb port only picks it up in usb 1 mode. I have tried both front ports and back ports and nothing changes, and this is a rather annoying issue because max transfer speed is only 1.00mb/s :-/ so i'm just wondering you think this is a pc issue? cable issue? or captivate issue?