Note that Ethernet cables, especially long ones, will act like resistors as you get past 10 meter

spans. Most Ethernet cables are 24AWG, 0.085 ohms per meter (0.026 ohms per foot) so if you

want to draw say 500mA from your adapter, there will be a 1 Volt drop for every ~25 meters / 80

feet.

Because these cables use pins 4,5,7, and 8 to pass power you can't use these in gigabit Ethernet

situations (those pins would be used by the gigabit router), but your device and router should

back down to 10/100 megabit in such cases.

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