The Mac T2 Chip: What It Is, What It Does, & Which Macs Have It

Recoverit Editorial Team

Oct 30, 2026 • Filed to: Solve Mac Problems • Proven solutions

⚡ Quick Answer: What is the Apple T2 Security Chip?

The Apple T2 Security Chip is a custom silicon co-processor used in Intel-based Macs (2018–2020). It serves as a hardware-level security gatekeeper with four primary roles:

• Secure Boot: Ensures only Apple-trusted software loads at startup.
• Encrypted Storage: Provides line-speed AES encryption for the SSD.
• Enhanced Privacy: Hardware-disconnects the microphone when the lid is closed.
• Processing: Handles Touch ID data, image signal processing for the FaceTime camera, and "Hey Siri" commands.

Introduced in 2018, the Apple T2 Security Chip is a powerful, custom piece of hardware inside many modern Macs. It acts as a dedicated co-processor designed to handle tasks like encrypted storage and secure boot, significantly enhancing your device's security. This article will explain exactly what the Mac T2 Chip does, its key benefits, and some known issues.

Beyond security, the Mac T2 Chip also manages your Mac's audio controller, SSD, and even the "Hey Siri" function. But what does this mean for you as a user? We’ll break down which Mac models have this chip and discuss how it impacts things like data recovery and third-party repairs, giving you the full picture.

What is a T2 Chip?

The T2 chip is a security chip developed by Apple for its laptops and computers. It is a second-generation custom chip developed by Apple for MacBook to give better security and enhance the performance of the device. It has various uses like encrypted data storage, Touch ID data security, better signal and image processing, and better hardware security also.

The T2 chip is not just a security chip but is a little processor in its own right. For all those who are looking to buy a MacBook or desktop, the obvious choice should be any model which is fitted with the T2 chip. It has a visible and astonishing effect on your PC and also enhances security invisibly.

A regular Mac is not that much in demand anymore just because of the fact that it lacks the T2 chip. iMac Pro has a T2 chip since it came out, and Apple will surely use it in all upcoming devices also. iMac still does not have the chip, and this should be changed soon by Apple. We have patiently waited for all MacBooks and iMacs to get the T2 chip because the benefits are worth waiting.

4 Ways the T2 Chip Increases Your Mac's Security

The T2 chip is a custom silicon piece that is made using multiple hardware controllers. Thus, it enhances security but also makes the performance of your Mac better than before. The T1 chip in earlier models helped manage the Touch Bar and its fingerprint sensor. It helped in detecting hardware that was not Apple-made and helped in System Management Controller’s Integration.

There are basically four ways by which the T2 chip increases your computer’s security and performance. Only two of these functions happen in MacBook Pro and Air.

1. Secure Boot

The T2 chip verifies everything used in the boot process — kernel extensions, firmware, and the macOS kernel — so a hacker cannot inject malicious code. When all settings are default, booting from an external drive is impossible. Use Startup Security Utility in macOS Recovery to allow older macOS versions or external-drive booting.

2. Encrypted Storage

The T2 chip combines an SSD controller with a crypto engine for instant encryption and decryption of SSD data. Data encrypted with the T2 chip cannot be decrypted without the correct password.

• Password attempts are throttled: 14 immediate tries, then waits between attempts 15–30, and a one-hour wait between the last 3 attempts.
• After 220 attempts, decryption requests are no longer accepted — your data may be lost forever, so always keep a valid backup.

3. Touch ID

The T2 chip manages the Touch ID fingerprint sensor. A password is required after restart, after 48 hours without unlocking, or after specific fingerprint/password usage patterns.

4. Mic Drop

With a T2 chip, closing the lid hardware-disconnects the microphone, so no software can listen or record voice data. The FaceTime camera view is also obstructed when the lid is closed, further enhancing privacy.

List of Computers that have the Apple T2 Security Chip

There are many Mac devices that make use of the T2 Apple security chip. Let us take a look at these devices

• MacBook Air 2018, MacBook Air 2019, MacBook Air 2020
• Mac Pro (2019, Rack), Mac Pro 2019, iMac Pro, iMac Pro Retina 5k 2020
• MacBook Pro 13-Inch 2020 2 Thunderbolt 3 Ports, MacBook Pro 13-Inch 2020 4 Thunderbolt 3 Ports, MacBook Pro 13-Inch 2020 4 Thunderbolt 3 Ports
• MacBook Pro 16-Inch 2019, MacBook Pro 15-Inch 2019, MacBook Pro 13-Inch 2019 2 Thunderbolt 3 Ports, MacBook Pro 13-Inch 2019 4 Thunderbolt 3 Ports
• MacBook Pro 13-Inch 2018 4 Thunderbolt 3 Ports, MacBook Pro 15-Inch 2018

Read More:

The Main Difference between Apple's T2 Chip vs. M1

Apple T2 Chip Bypass Software Review

All You Must Know About the Apple M3 Chip

Apple M4 Chip - Everything You Want to Know About it

Known Issues Linked to the Apple T2 Security Chip

• Third-party repair restrictions: Apple confirmed the T2 chip blocks various third-party repairs — Touch ID sensors and motherboards need software diagnostics to run smoothly after repairs.
• Audio glitch with USB 2.0: The chip caused an audio glitch when using USB 2.0 (USB 3.0 is unaffected), and it intervenes when installing other operating systems.
• Jailbreak danger: An unattended MacBook can be jailbroken via a USB-C cable and Checkra1n 0.11.0 after rebooting — a risk at border security checks or for companies with large MacBook fleets.
• Unpatchable chip: All T2 security chips are unpatchable. In case of attack, reinstall Bridge OS using Apple Configurator, verify the SMC payload integrity, and never leave the device unattended.

How to Identify Mac Models with Apple T2 Chip?

1. Open System Information: Hold the Option key and click the Apple Menu, then select System Information.
2. Find the controller: Click on iBridge (or Controller, depending on your macOS version).
3. Check for the chip: If Apple T2 Chip is listed on the right, your Mac model is fitted with the T2 chip.

The Bottom Line

Well, the Apple T2 Security chip has a lot of great effects on your MacBook when it comes to security and performance. There are different ways to influence your device, and in the above article, we took an in-depth look at the security chip.

This is the future, and almost all MacBooks come fitted with it. We knew about its features and drawbacks on your device and the various models that use the chip.