Just out of curiosity, is there any reason you couldn't (or shouldn't) use a laptop (2.5") drive in a TiVo? Obviously I would need a way to secure it inside, but I would think this could help with noise/heat issues, potentially. I have a 2.5" to 3.5" cable adapter kit, which allows me to connect a laptop drive to a normal desktop setup (i.e., IDE ribbon cable and power connector) so that's not a problem. It is only a 4200rpm drive, so maybe speed would be an issue? Are laptop drives not meant to be spinning all the time like their 3.5" counterparts? I have an unused 40gb drive that I was considering using as a B drive in one of my SA2s. Talk me out of it.