I run a laptop automotive scanner and laptop based digital storage oscilloscope for use in our garage and am running into issues of the usb connection getting sloppy and losing connection..usually right in the middle of a test. I have adjusted the clip tension on the usb ports and it has helped but still have too many problems. Was wondering if its possible to have a laptop with a screw on connector like those rs 232 ones anymore? And if I can, would it work ok my test equipment (using a usb to 232 converter on end of their cables).