Yeah, the BCM7038 was covered in the HR20-700. I believe that it was out in the open on the HR20-100, though. Another poster sent me a dmesg file from the bootup messages (directly from the HDD) that gave an indication of what parts were involved on the HR20. I wouldn't suggest that any of you do that as it could be potentially intrusive to the HR21 HDD. I would put good money on the BCM7401, though.