i seen 1 at Walmart that plugs into your usb and has a cord , the sales man there said those types were the best because you can move it around, but the brand they had there was a cheap brand i don't like. so i thought someone that had one might know of a good one . I could get a pci type but it's for my eldery parents and i think the usb port type with a cord would be better for them so they could move it around rather than moveing a computer if there signal was weak in that area. thank you for takeing the time to help me out.I seen alot of these types i just don't know the difference in them i would hate to spend their money on something that barely works.