Originally Posted by
UVAhoo06
I assume that this is the $59.00 one? Would the 65W or 80W not work? How does this one differ from 65W/80W? Sorry if I'm not the most technical guy. I *was* an English major
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Yes, it's the $59 power cord. It's straight DC to DC, not to be confused with the 65/85W AC to DC power adapters.
Using the AC/DC adapters on a DC empower equipped aircraft (like UA's 747s) would require an additional DC/AC converter and would most likely exceed the 75W limitations of UA's empower outlets - resulting in the seat's power outlet shutting down.
The bottom line is that if you want to use a MacBook on a UA 747, the MagSafe Airline Adapter (part # MA598Z/A ) is your best solution.