Eforcity 7 port powered hub not being recognized on the computer I want to use it on. It is recognized by another computer I do not want to use it on. I think it has something to do with the cable. Where can I find some kind of driver to put on the machine I want to use it on?
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All PCs provides power supply via USB port. The power is controlled by electronic circuit. Sometimes when overloaded the circuit burns out (the last controlling transistor, actually). This does not prevent the data communication, because it is separated circuit. But if the device is not powered it cannot communicate. When you plug the USB device to powered USB hub, then all go right. Are you able to use the USB ports with other USB-powered devices like USB sticks, mouses, cameras? If not, the mentioned circuit is burned out. If they work OK, then your internal USB hub provides less power current than needed. In both cases there is nothing to do. The circuit resides on the mainboard of the laptop and replacement is expencive. Use it with that external USB hub you have.
you need to enable the USB settings under power options
start>>control panel>>power options>>click change plan settings of whatever is highlighted(ex balanced recommended)>>change advanced power settings>>USB settings>>USB selective suspend settings>>setting should be enabled
Did this suddenly start to occur? Were they working before? If so, it is very simple - shut down computer, remove the battery and unplug any power source, wait a couple of minutes and reassemble and power up. Wala! I read all kinds of complicated instructions, started with the simple, and problem solved.
You can plug a USB hub into the working USB port on the computer. The USB hub can have several ports so you can plug in several USB devices.
I suggest you get a powered USB hub because if all the devices that you plug into this hub exceeds 500mA then your computer's USB port will stop working because it could not supply enough current.
You will not need to plug in the power adapter into the hub if the device/s do not overload the computer's USB port.
Most likely a motherboard problem, though you can try and re-do windows, best bet on getting it all to work is Turn off CPU, Unplug Power cable, And all usb devices, let it sit for about 20mins. Plug it all back in. Turn on the CPU! Though this might really get on your nerves having to do this multiple times, id get a new motherboard.
You can get a PCMCIA adapter with 4 USB v.2.0 slots on eBay. It requires power from the USB port on the laptop, but the pigtail connector is included. Works like a charm! Comes from China just like everything else in this country.
There is no enough power in you USB port. I was have similar problem with my old PC (Duron 1.3GHz, I don't know what motherboard).
When I conected HDD (My passport Essential) to USB (there is only USB 1.1 port on this MB, and probably if you have USB 2.0 you will have no problem), hardware wizard is started, looking for drivers (which are not needed to install portable HDD), and then I have message like "unrecognized USB device ...".
SOLUTION: On this MB there is 6 USB 1.1 ports, but only 2 are connected on case (with plugs on case outside), others are on MB and if you have cable you can use it. In my BIOS all 6 were turned on, and I think there must be a problem with power on chip (you have some power divided with 6 ports, and this is not enough for HDD).
I turned off my other USB ports in BIOS, and left only fist two, and HDD is now in my computer ....