For computers with Thunderbolt™ 4 or Thunderbolt 3 ports, Sonnet offers a full line of Thunderbolt PCIe card expansion systems. Our Echo™ series feature single and multi-slot expansion for high-performance audio, video, and networking cards. Looking for flexibility? Our DuoModo™ line of mix and match enclosures and modules allows you to customize the ideal Thunderbolt expansion system. In addition, Sonnet carries rackmounting solutions with PCIe card expansion for Mac Studio™ and Mac mini® computers.