A cheaper and faster alternative would be to pass a gigabit Ethernet connection through from an RJ45 on the power supply to a combined power network port on the laptop. The connector could be much thinner than RJ45 without sacrificing compatibility.
The 12-15W provided by Power-over-Ethernet is considerably less than most current laptops gobble (Toshiba's current list has laptop power adapters from 60-180W) but there ought to be niche market in Green laptops that could fit that power profile. Something to work towards at least.
Voltage/current might be a pain though. PoE requires a max current around 0.3A (15W at 48V) but laptops seem to start at over 3A (>60W at <20V). I'd think twice before passing a Cat5E cable for 3A when doing an electrical safety inspection. Oh I don't have to - it is <50V, so exempt even though it would be a substantial fire risk :-)
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Date: 2009-01-17 11:08 (UTC)The 12-15W provided by Power-over-Ethernet is considerably less than most current laptops gobble (Toshiba's current list has laptop power adapters from 60-180W) but there ought to be niche market in Green laptops that could fit that power profile. Something to work towards at least.
Voltage/current might be a pain though. PoE requires a max current around 0.3A (15W at 48V) but laptops seem to start at over 3A (>60W at <20V). I'd think twice before passing a Cat5E cable for 3A when doing an electrical safety inspection. Oh I don't have to - it is <50V, so exempt even though it would be a substantial fire risk :-)