I cannot get my Windows 7 x64 laptop to access my SATA Hard Drive connected via a USB adaptor. Upon connecting for the first time or after you have uninstalled the USB Mass Storage device, it successfully installs the drivers. But you cannot see the drive listed in "My Computer" nor access it.
If you go to Disk Management the drive is acknowledged but offline. I had no problem accessing an IDE drive connected via a USB adapter that was made by the same manufactorer that makes the SATA to USB I am using.
I have read/wrote to this SATA drive and USB adaptor plugged in several other machines using Vista and XP.
My SATA to USB adaptor:
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