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On the MacBook that's a combination 3.5mm audio jack and SPDIF port, one that can emit laser light if it's confused about what's plugged in or not. So it could
by astrodust 10y ago
On the MacBook that's a combination 3.5mm audio jack and SPDIF port, one that can emit laser light if it's confused about what's plugged in or not.
So it could be to block that light, or to prevent cruft from going into it, or to fight the urge to use headphones at work.