I see that there are a few revisions floating around out there. I recently picked up a dhp and my dell laptop apparently doesn't care much for this other brand of adapter I received with it. Keyspan seems to be the most commonly recommended but upon looking i saw a few models available. It looks like the USA-19HS is the most recent w compatibility with even Windows 7. Would this be the way to go or with the DHP being an older piece.of hardware would I be better off finding one of the same era? TIA.