Add Connectivity & Unlock Performance: Expand your computer with a high-performance PCIe card over Thunderbolt 5. Ideal external PCIe expansion for Mac, Windows, and Linux systems. Thunderbolt 5 to PCIe Expansion: Delivers up to 6000 MB/s bi-directional PCIe bandwidth for pro audio, video, storage, and networking cards. Wide PCIe 4.0 Card Compatibility: Supports half-length+ (7.75"), full-height, single-width PCIe 4.0 x8 cards—plus most cards that require a daughter card. Pro-Level Power & Connectivity: Includes auxiliary PCIe power for power-hungry cards. Second Thunderbolt port enables daisy-chaining and provides 15W to connected peripherals. Compact, Quiet & Rugged Build: Lightweight aluminum enclosure with temperature-controlled, variable-speed fan for extremely quiet cooling; perfect for desktops, studios, and on-set workflows. The Echo SE I T5 is a Thunderbolt 5 Expansion system compatible with Thunderbolt 5, 4 and 3 computers. A 1-slot Desktop Thunderbolt 5 to PCIe Card Expansion System for Computers with Thunderbolt or USB4 Ports. Connect One Full-height, Half-length+ PCIe Card (Plus Daughter Card). This compact, single-slot system — compatible with Apple M series Macs, Intel Macs with Thunderbolt 3 ports, plus Windows and Linux computers with Thunderbolt 5 or 4 or USB4 ports — enables you to easily connect almost any Thunderbolt compatible, non-GPU PCIe card to your computer via an included Thunderbolt 5 cable. This compact, lightweight Thunderbolt 5 to PCIe expansion system adds connectivity and improves capabilities by connecting a high-performance PCIe card to your computer at up to 6000 MB/s bi-directional bandwidth, supporting one half-length+ full-height PCIe 4.0 card (plus daughter card), providing auxiliary power and a second Thunderbolt port with 15W for peripherals, enabling daisy-chaining, offering temperature-controlled quiet cooling, delivering rugged aluminum protection, and featuring smart power management that automatically powers on and off with your computer.