Recently we have some serious crashes occurring when we are transferring files to or from our newly purchased USB hard drive. We would like to know if it's common problems of USB hard drive or there is something wrong about our computers. Would anyone answer the following questions: Placement: Where is the best way to place the USB drive? Currently when I plug in the USB drive, I simply place it at the top of the desktop computer case. Is it alright? Fan: Do I have to buy some external fans to cool down the USB drive? Is it necessary? Lockup: Is it normal that a system will hang or lock up if: (A) we are trying to cut/copy/paste many files at once? (B) there are many cut/copy/paste operations are active at one time? (C) copying/moving a large file (e.g. several GB large) (D) the USB drive is running too long? Legacy USB mode: Does "Legacy USB support" (in BIOS) has anything to do to affect the performance or stability of a USB drive? Should it be on or off? Formatting: Is it safe to use Windows to format USB drive to NTFS, or should I use third-party tools? Will formatting by Windows cause instability problems like this?