Rate very strongly on the sale. The USB HUB does not >> the PC can no longer turn on, the power LED lights of computers and possibly schlatet the AC adapter (short circuit) to a Gigibyte motherboard (GA-P35-DS3P). You get it only to run when you connect the power plug first after power to HUB, then it works 100% >> only off and on again, which of course is not !!. Who issues because so forth bullshit. I assume that there may still be running on older motherboard. The problem is because the a new PC to the USB port has always 5V, even when turned off, this could park's / motherboard then in older PC. My old HUB (whatever else 100% is still working, Advance USB 2.0 & FireWire ComboHub) shows a similar behavior. The computer can be switched on but only it does not work the same. You must first disconnect the USB connector (connect externally) and then plug it back >> and then it works. But the HUB from 2002 and newer Hub's this should not occur more comfortable. ALSO >> HANDS OFF THESE SCRAP.