I use this product with my laptop which only has one USB port. I have a variety of USB hardware items that I connect to it including a Microsoft Optical mouse, a burner, printer, and a palm handheld. I have a problem with it turning off and on. I often lose the ability to use my mouse because it runs out of power. This is simply because the mouse is drawing power from the USB port, and so are the other hardware items connected to it, which turns out to be too much for it to handle.I would recomend buying a hub with a power adapter. You can buy a power adapter for this, but it's not really worth it.