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I recently purchased this USB hub for use with my raspberry pi. However I've been having issues with it and my external hard drive.

When I plug the drive in everything appears to be okay. The LED on the Hub lights to inform me that the system has recognized the device, the disk spins up, and the light on the drive itself turns on. However it never shows up in /dev.

When I check the log it appears that it has tried to mount, but always fails with something like "Cannot support over 500mA." My hub should be supplying about 900mA.

  • Is this more likely a hardware or a software problem?
  • Is there any way to force it?

Edit: I think this is a problem with the Hub. The RPi recognizes it, but to no avail. Here's my dmesg output.

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I can't find any technical specifications for the device. But it seems like it should work to me... – Jivings♦ Jan 5 at 19:30
A bit more information about the hub here. – Jivings♦ Jan 5 at 19:35
This looks like the spec of the hard drive (PDF), but it appears to have it's own power supply so I'm confused. More information about the hardware is required for an answer to this question I think. – Jivings♦ Jan 5 at 19:44
Yes, it did come with a USB power cable... Unfortunately I'm not sure where I lost it. It's been fine running off USB power from my Late 2009 21.5" iMac. – mrky Jan 5 at 20:34
I would expect that could be the problem. It appears the hub cannot power the hard drive. Do you have anything else plugged into it? – Jivings♦ Jan 6 at 9:58

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