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This Anker 4 Port USB 3 Hub is connected to one of the computer's rear USB 3's jacks. It does just what it is supposed to do, i.e. providing convenient accessibility for my USB 2 and 3 peripherals. It can also charge devices such as cell phones, although I don't use it for such. But we arrived at this point with some effort--not due to anything wrong with the device. When I first hooked the hub to the computer's USB 3 jack(s),only USB 2 devices were recognized. A call to Anker had a replacement hub in my hands over a weekend. Same result when I plugged that one in! Figuring by this time that the problem lay elsewhere, I spent some time on the internet and eventually found that Windows 10 (or one of the updates thereto) enables the computer to ",,,turn OFF this device (the computer's USB 3 Root Hub) to save power. Once that feature was disabled the Anker Hub worked perfectly. I Called Anker again and told them that the problem was not in their device, but within Windows 10. They graciously declined my return of the replacement they had sent to me. Good folks at Anker. My thanks to them for a great, attractive product Hoping it might be helpful to others who may run into this problem, you can disable Windows 10's ability to shut off USB 3 Root Hub by going to Device Manager and double clicking ROOT HUB (USB 3.0). Select PROPERTIES and click the POWER MANAGEMENT TAB. Then Unclick (clear) the little box that enables the computer to turn off the USB 3 ROOT HUB to save power. Then Click OK.