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USB 3.0 port runs at 2.0 speeds

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September 22, 2013 1:35:06 PM

I have a USB 3.0 Toshiba external drive which has a read speed of 53 - 114 MB/sec when connected to my home theater PC, but only 25 - 29 MB/sec when connected to my Toshiba laptop 3.0 port (it has the blue insert). In addition the indicator light on the external drive flashes blue when connected to a 3.0 port, and it flashes white when connected to a 2.0 port. It flashes white when connected to my laptop's 3.0 port.

I tried finding new drivers but there doesn't appear to be any. I tried uninstalling the existing drivers for all USB devices and then rebooting. After they all re-installed there was no change. I don't see any USB 3.0 devices listed under device manager. I updated my bios to the latest version, but there is no option for enabling/disabling USB 3.0 devices.

I read a post elsewhere that suggested getting a new chipset driver from intel, but I haven't found one that would be compatible with a 1st generation core i7 Q720 processor. So any other suggestions would be appreciated since I'm at a loss as to how to fix this.

-Tony

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a b G Storage
September 22, 2013 1:49:43 PM

Which model of laptop is the toshiba?
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September 22, 2013 1:53:51 PM

markwp said:
Which model of laptop is the toshiba?


It is a Satellite A500-ST6647.
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a c 84 G Storage
September 22, 2013 2:10:03 PM

What makes you believe, the A500-ST6647 has usb 3.0? I don't think it has and that's why you don't see them in device management.
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a c 523 G Storage
September 22, 2013 2:29:23 PM

noidea_77 is correct.
That model only has USB 2.0 ports. Here's a link to the spec sheet: http://support.toshiba.com/support/staticContentDetail?...
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September 22, 2013 3:19:53 PM

Dereck47 said:
noidea_77 is correct.
That model only has USB 2.0 ports. Here's a link to the spec sheet: http://support.toshiba.com/support/staticContentDetail?...


Your right - it's a combo esata/usb 2.0. It has the blue usb tab, and that's what led me to believe it was a usb 3.0 device. Thanks for the help.
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