I have a USB hub connected to my laptop. In the hub I have my joypad and my wireless adapter for my router. However, just today I get an error stating that the hub doesn't have enough power to support the adapter and has exceeded the allowed usage (something to that effect;) ). The hub (using the adapter) can support up to 500 mA per port (4 port hub).

The hub has a built-in safety. If it draws too litttle or too much current, it shuts off power to that port. However, my hub just shut the power off and port where I had the adapter was still green.:confused: The thing I can't figure out is why it does this three days later instead of picking it up right away.

Anyhooo, when I got the error message, it showed where I could find a source to support the adapter (the computer). The outline on the My Computer showed 2 ports, the one my hub is using and an "unused port". However, I can only find one. Is there any way of bringing up a diagram of my laptop to find the unused port? I know what the icon to a port looks like. The only other option is to get a PCIUSB card installed on my laptop to give me more ports.

Are you speaking of a schematic for your motherboard? If so, then you should probably be able to find one on the web somewhere. What Make and Model is your laptop? Be happy to look around for you.

As for why this is happening? Here is a little info that might help:

Some USB hubs use bus-power or self-power. A bus-powered hub usually supplies only 100ma of power to the USB devices and self-powered hubs can supply up to 500ma. Keyboards, pointing devices, joysticks, and other low power devices require only up to 100ma. Other devices that require more power include video cameras, scanners, and storage devices.

Thought I would update this thread:D

Had the exact same thing happen to my second hub. Had the computer taken into the shop for a diagnostic. As it turns out, there's a loose connection on the hub. If the hub is moved around too much while connected to the pc, the power plug comes loose and thus the hub doesn't have enough power(in itself) to support several items.


The shop recommended not moving the hub while it's connected to the pc. If the hub has to be moved, it should be disconnected from the computer first. Doing this will NOT shut down the computer.

This seems to have fixed the problem:thumb:

I would be replacing the hub then. If there is a faulty connection, get a new one! I have a dlink 4 port usb hub that worked great until I retired it a few years ago. I don't use usb much anymore.

You should be able to move the hub all you want. Whoever said don't move it while its connected is full of shit. I used to pick mine up and move the thing around a few inches to put other things on my desk and I never once had a problem.

Anyway, I would either get the power short fixed if its under warranty, or buy a new hub.