I have gotten an external hard drive for my MacBook. Plan is to use this for recording video files to, with my external tv-card; Elgato EyeTV 250 Plus. I notice that writespeed through USB2.0 is not so fast, when it comes to large files. And the question is, will this handicap recording quality? Since the TV Card cant write faster than USB2.0 to the hard drive, will it compromise and reduce quality? Its a Western Digital My Passport Essential 1TB if anyone wants to know.