Actually, I just needed a USB hub, but then I liked the way the manual opening of the USB ports. Unfortunately, the whole law is structured unfavorable. The ports are numbered. No.1 below, Nr2. above, then below, etc. No.3 again .... until 7 Port, which is then again below. The buttons for on / off are numbered up from left to right with 1-7. I think it would be better if the ports have the numbers 1-3 and the port numbered above the bottom with 4-7. But you get used to it certainly. Although the Hub does not need power supply, however, 2 USB ports on the computer to supply the devices with power. That left me with a notebook advantages and disadvantages. Advantage is, I can work completely free from electrical outlets. Downside is the HUB does not recognize some devices, such as my Samsung S2 1TB USB hard drive, or it can not supply enough power, so I have to be infected directly on the notebook, then wmoit my 3 ports (2 for stroke, 1 for HDD) are occupied. Otherwise, I have no problems had with other USB devices. With me working laser printers, USB to Playstation 2 Converter, 5.1 USB sound card, external keyboard and mouse as well as various USB sticks (which I certainly have not made a speed test). Even my phone is detected and loaded. So I can recommend the stroke, even if my HDD is not recognized. The EH is unusual in that it has only one USB connector (usually have 2.5 "HDDs yes two USB plug).