The first step of upgrading my series 3 unit is done. After I upgraded the original 160GB had to a WD Red 1TG I cranked it up and asked my wife to use the unit and let me know her observations. Menu is faster Two unviewable recordings are now somewhat viewable That fits with what I was thinking. Now I have two additional upgrades to perform. Next I will replace the caps in the power supply. I feel certain the output is low. And last I will replace the USB WiFi dongle with a remote hub that powers off my WiFi using AC protocol. To the box it will appear as an Ethernet connection. I feel the dongle is pulling 2-3 watts off my 5v supply and I would rather have that as a safety net. Thanks again to those that helped me with software and options on the HD install!