UAD Plug-Ins

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Apollo Twin X and Apollo x4 System Requirements

This article provides the system requirements for Apollo Twin X and Apollo x4.

General Requirements

  • Thunderbolt 3 or 4 cable (not included).
  • Internet connection to download software and authorize UAD plug-ins.
  • 25 gigabytes available storage.
    Note: We highly recommend having at least 100 GB of free storage on your internal hard drive.


  • Available Thunderbolt 1, 2, 3 or 4 port.
  • macOS Catalina 10.15, Big Sur 11, Monterey 12, Ventura 13 or Sonoma 14
  • Thunderbolt 1 and 2 connections require an Apple Thunderbolt 3 to Thunderbolt 2 Adapter (not included).


  • Available Thunderbolt 3 or 4 port.
  • Windows 10 64-bit edition or Windows 11.


  • Operating systems not listed above are untested. Although untested operating systems may work, they are not supported by Universal Audio. Prior UAD software for older operating systems and discontinued UAD products is available in the UAD software archives
  • Pre-release and beta versions of operating systems are not supported.
  • 2-in-1 systems (notebook/tablet) are not recommended.
  • AMD systems are untested with UAD Thunderbolt devices. Although untested systems may work, they are not supported by Universal Audio.
  • For updated details on macOS and Windows compatibility, read this article.