Bring PCIe expansion to Thunderbolt 3 systems with the Sonnet Echo Express SE I Thunderbolt 3 Edition. This 1-slot expansion chassis is built for users who need a dedicated card outside the computer, whether that means a capture card, storage adapter, or other PCIe accessory that does not fit the host system. For production environments, the value is in control. External PCIe expansion lets teams keep the host machine compact while adding the exact card required for the job. That can simplify workstation deployment, reduce internal service complexity, and make it easier to standardize around a known expansion path. The Thunderbolt 3 connection gives modern laptops and compact desktops a practical route to desktop-class expansion without changing the core system. With a single-slot design, the chassis stays focused on one purpose: making one PCIe card available where it is needed. Choose it when the workflow depends on a specific PCIe card and the host platform needs a clean, external expansion option.