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macOS is Apple's operating system for Mac computers. It has undergone many changes since its initial release. Below is an overview of its major versions and configuration details.

macOS has been through a series of version updates, each with new features, improved performance, and security enhancements. Below are some notable releases:

• Mac OS X 10.0 (Cheetah) - Released in 2001, this was the first version of the new Mac operating system after the transition from Mac OS 9.
• Mac OS X 10.1 (Puma) - Released in 2001, included better hardware support and performance improvements.
• Mac OS X 10.2 (Jaguar) - Released in 2002, it introduced many improvements like faster Finder and better networking.
• Mac OS X 10.3 (Panther) - Released in 2003, it featured a new Finder, Exposé, and better security.
• Mac OS X 10.4 (Tiger) - Released in 2005, it introduced Spotlight, Dashboard, and improved support for Intel processors.
• Mac OS X 10.5 (Leopard) - Released in 2007, with Time Machine and the introduction of 64-bit support.
• macOS 10.9 (Mavericks) - Released in 2013, marked the first version under the “macOS” branding.
• macOS 10.14 (Mojave) - Released in 2018, included Dark Mode, improved privacy, and a revamped App Store.
• macOS 11.0 (Big Sur) - Released in 2020, it introduced a complete visual overhaul and support for Apple Silicon processors.
• macOS 12.0 (Monterey) - Released in 2021, it brought features like Universal Control and Focus Mode.
• macOS 13.0 (Ventura) - Released in 2022, it added Stage Manager and more integration with iOS.
• macOS 14.0 (Sonoma) - Released in 2023, introduced a new lock screen, interactive widgets, and support for new chip architectures.

Mac configurations refer to the different hardware setups that Apple provides for its Mac computers. Depending on the Mac model and its internal components, users can select varying configurations based on performance and needs.

• MacBook Air
  1. Processor: M1 or M2 chip
  2. RAM: 8GB (expandable up to 16GB)
  3. Storage: 256GB SSD (expandable up to 2TB)
  4. Display: 13.3-inch Retina display
  5. Battery Life: Up to 15 hours wireless web
  6. Ports: 2 Thunderbolt/USB 4 ports
• MacBook Pro
  1. Processor: M1 Pro, M1 Max, M2 Pro, or M2 Max chip
  2. RAM: 16GB (expandable up to 64GB)
  3. Storage: 512GB SSD (expandable up to 8TB)
  4. Display: 14-inch or 16-inch Retina XDR display
  5. Battery Life: Up to 21 hours wireless web (16-inch)
  6. Ports: HDMI, SD card slot, Thunderbolt 4, and MagSafe
• iMac
  1. Processor: M1 chip
  2. RAM: 8GB (expandable up to 16GB)
  3. Storage: 256GB SSD (expandable up to 2TB)
  4. Display: 24-inch 4.5K Retina display
  5. Ports: 2 or 4 USB-C (depending on model), Ethernet
• Mac Mini
  1. Processor: M2 or M2 Pro chip
  2. RAM: 8GB (expandable up to 32GB)
  3. Storage: 256GB SSD (expandable up to 8TB)
  4. Ports: USB-A, USB-C, HDMI, Ethernet
• Mac Studio
  1. Processor: M1 Max, M1 Ultra, or M2 Ultra chip
  2. RAM: 32GB (expandable up to 128GB)
  3. Storage: 512GB SSD (expandable up to 8TB)
  4. Ports: USB-C, USB-A, HDMI, Ethernet

macOS continues to evolve with each new version, and Apple’s hardware configurations cater to a wide variety of user needs, from everyday tasks to high-performance computing. Whether you’re using a MacBook Air for portability or a Mac Studio for professional workloads, Apple offers a range of options to suit every user.