If you have an Apple keyboard ... Unfortunately, your Mac is misinterpreting the keyboard’s hash symbol as a backslash. We’d recommend that you get a proper Mac keyboard., ...

TL;DR: Apple has updated the mute key on the MacBook Air M4 to feature a speaker symbol with a strikethrough ... it was an oddity with the keyboard, and a slight pitfall for some Mac owners.

Apple has officially announced its new MacBook Air lineup for 2025 ... This age-old discrepancy has now been resolved, with the keyboard symbols aligning with the system's on-screen graphics.