![]() ![]() On modern Macs, T2 chips are foundation for new features like the APFS encrypted storage system, a more robust secure boot process, and the TouchID authentication on Macs. They work separately from the main CPU, and they're used to handle encryption-related operations in a secure, hard-to-tamper chipset. T2 is a secure co-processor that is embedded in modern Apple devices. See it now: MacBook Air (2018) from Apple Hold Power Button / Touch ID Button ( same function ) for 10 seconds and perform this action 3 times in a row. ![]() "This disconnect is implemented in hardware alone, and therefore prevents any software, even with root or kernel privileges in macOS, and even the software on the T2 chip, from engaging the microphone when the lid is closed." "All Mac portables with the Apple T2 Security Chip feature a hardware disconnect that ensures that the microphone is disabled whenever the lid is closed," said Apple in a white paper that detailed T2's security features. ![]() Right-click the input device and select Uninstall device. Then right-click the input device and select Enable device. Right-click the input device and select Disable device. Right-click the input device you want to use and select Update driver. This new security feature was announced today at an Apple event held in Brooklyn, New York, where Apple also revealed the MacBook Air 2018, Apple's latest update to the company's successful line of MacBook notebooks. Check if the microphone is working after each solution. Often the easiest way to fix problems with the microphone is just to change the sound settings in System Preferences. ![]()
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