Have an up to date pretty powerful desktop machine running Win 7x 64 bit. When I plug in an external USB hard drive it is taking ages to read it and come up with the files/folders...and the ransfer rate is only about 1.5Mb/sec. The drive is quiet and pretty cool, only a few months old. All usb 2.0. I suspected it may be failing and at 2TB it is nearly full. Anyway, in an effort to back it up I currently have it on a different machine, a laptop running Vista Business 64 bit and writing to an identical 2TB usb external drive. Now it is transferring at a more respectable 14-16Mb sec which is more acceptable as it has thousands of mp3's and pictures. I am now of the opinion the drive is ok and there is an issue with the desktop system. The desktop machine runs it's internal sata drives fine and speedily. Could anyone suggest why the transfer from/to the usb drive is at a snails pace? The same happenes if I try to transfer from the usb external to a ntworked Synology Nas, very slow so again it appears to be a USB issue. Printer/keyboard/mouse on USB are working fine. Any ideas?