1. If the maker walks there is no way to fix this as the drivers are not open to tinkering.
2. There are too many powered hubs that are 100mA per port. However.
3. http://www.newegg.com/Product/Product.aspx?Item=N82E16820223122 looks to me to be a bus powered USB HUB and the only power I see is for the SATA.
Bob
I have a Rosewill RDCR-13001 Front Panel card reader/USB/eSATA hub. This is self powered meaning it has its own dedicated power supply. The card reader stopped working suddenly. I don't see the drive letter(s) in MY Computer anymore. In the Device Manager there is a yellow inverted triangle over this USB hub. I uninstalled and reinstalled (several times) and the Windows XP professional gives me the error "The hub does not have enough power available to operate the device driver name. Would you like assistance in solving this problem? If you click No, the device may not function properly."
The blue LED light on this card reader is still on, so I know it is getting the power supply. In the Device Manager, I go to properties of the problematic USB hub, and under the power tab it says the USB hub is Bus Powered and available power is 100mA per port (I know it should be 500 for self powered). I initially thought it was the cable or computer power supply that was the problem, so changed both (I had spare ones) without any luck. Then I changed the Rosewill card reader with a similar but older model (again I had a spare one) and the same problem persisted.
Since it was working fine a few days ago, I decided to do system restore in XP and restored to a point from 2 weeks ago. Now it started working again. USB Hub properties (in Device Manager) now shows hub as self powered and available power as 500mA. When I updated my XP (because Windows Update asked me to), the problem recurred.
I am guessing there is some registry change that happens in the XP with updates that makes it think this card reader is BUS powered when in fact it is self powered. Can anyone please help.
Thank You

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