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UAC... Lightspeed calls it an Apple connector.
ARS Technica clarifies it's not an Apple connector, it's old technology and already more than 6 years old when Lightspeed started using it...
Why did Lightspeed choose the UAC? - Lightspeed Aviation
The new Lightspeed Delta Zulu is the first premium aviation ANR headset on the market to use UAC connection technology. Now, you’re probably wondering “What
www.lightspeedaviation.com
ARS Technica clarifies it's not an Apple connector, it's old technology and already more than 6 years old when Lightspeed started using it...
Apple’s “new” UAC port wasn’t made by Apple, and it isn’t new
"Ultra Accessory Connector" is Apple's name for an obscure but already-existent port.
arstechnica.com