We encountered an error while trying to save the changes. We've made a note of it, and we'll fix the problem as soon as possible.
Next, we turn our attention back to the upper case.
Here's a big surprise: the circuit board attached to the back of the trackpad is identical to the one on last year's Air.
A new addition to the upper case is the network of LEDs attached to the keyboard backlight cable. A couple LEDs transmit light through fiber optic channels to evenly illuminate the keys on the keyboard.
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