USB 3.0 connecting high-speed USB 2.0 drive

I have a Western Digital 1 TB USB 3.0 external hard drive. I connect it to the USB 3.0 port (blue) on my laptop Acer Aspire 5755-6647, who works under Windows 7 x 64.

When you connect, I get the "this device can perform faster: this USB mass storage device can transfer information faster if you connect it to a Super Speed USB 3.0 port" message. When you copy files to the drive, I get about 32 MB/s, which corresponds to a USB 2.0 speed.

I tried to disable the USB power management in the utility USB 3.0 host controller. I tried to uninstall the device and put it back. I'm using the cable supplied with the disc and is a USB 3.0 cable. I have the latest Renesas USB 3.0 driver installed (2.0.34.0). I also tried to use an older driver from Renesas. My BIOS is updated (P5WE0121).

I don't know what else to do. If it helps, the first time I have connected my laptop hard drive, it's on a USB 2.0 port (I had for some reason any remembered which side of the laptop had the port 3.0 and does not check for blue). As I have said, however, I completely uninstalled the device. I suspect that Windows can be "remember" the device and install with the 2.0 driver.

Update: I finally try one last thing before you go to Acer support. I thought that perhaps not enough power provided by my USB 3.0 port on the drive, forcing him to 'downgrade' 2.0. So I bought a cable to Yfor $5 to offer auxiliary power of the adjacent 2.0 port. Result: IT WORKS. Immediately connected as a USB 3.0 peripheral speed and transfer is USB 3.0.

Solved. A little disappointed with the Acer/Intel for the USB 3.0 under normal, however.

Tags: Acer Laptops

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