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New MacBook Pro Models Lack Optical Audio Out via Headphone Jack
Apple appears to have removed optical audio output support from the headphone jack on its new 13-inch MacBook Pro with function keys, suggesting it is unlikely to have made the transition in the Touch Bar equipped models either.Optical audio output is used to link Macs to home theater setups and A/V systems capable of multi-channel surround sound, by way of a mini TOSlink adapter connected to the 3.5mm jack.
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