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And it works great. Its a whole lot faster than my first serial MTH cable (with a huge 'bump' in the middle) I purchased from overseas over a year ago. This cable gets
Should work the same if you have both ports as far as I know. The COM is supposedly easier to setup and can be extended cheaply and without loss of signal, whereas the USB is more expensive and less able to be extended in length (if you arent using a laptop). Many newer PCs dont have COM ports though.