RJ45 is too fat

[fanf]

One notable feature of the ports on the new MacBook is that the RJ45 Ethernet socket only just fits - it wouldn't if the machine were much thinner. In fact the MacBook Air notoriously doesn't have any wired ethernet connection at all, relying on IEEE 802.11n WiFi for connectivity.

Of course other manufacturers are making expensive thin laptops. The Dell Adamo neatly solves the RJ45 thickness problem by putting the port behind the display hinge, where the machine is as thick as the body plus the display.

The Voodoo Envy's solution is to put the ethernet socket in the power supply, which acts as a WiFi hot spot which the laptop uses for connectivity. This is cute but it means you only get 54Mb/s because the base station doesn't have 802.11n support.

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.

ETA: The other advantage this design would have is that the combined power and ethernet connector can use the magsafe idea, so you don't have the problem of one safe and one unsafe connector when tethered.

Comments

[hobnobs.livejournal.com]

But that is sensible, and unlikely to happen. (And probably patented so that no one can do it anyway. ;) )

[ronebofh.livejournal.com]

If my memory servers, back before the days of integrated RJ45 ports, there was a PCMCIA card that had a little pop-out tab where you could plug the Ethernet vertically. The contacts faced towards the computer. Perhaps flimsy, but certainly space-saving. I wonder why this wasn't adopted on the Air.

[bens_dad]

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 :-)