Sonnet Thunderbolt PCIe Expansion Chassis Echo Express SE IIIe — Wired, Black, Aluminium

Sonnet Thunderbolt PCIe Expansion Chassis Echo Express SE IIIe is a wired desktop enclosure that connects up to three full-height, half-length+ PCIe cards to computers with Thunderbolt 3 or Thunderbolt 4 ports. Housed in a black aluminium case, the Echo Express SE IIIe provides three x8 PCIe slots compatible with PCIe 3.0, 2.0 and 1.1 cards up to 7.75 inches long and includes an auxiliary PCIe power connector for cards that require additional power. The unit ships as a single desktop chassis with a Thunderbolt host interface and is intended for professional desktop expansion of GPUs, audio interfaces, capture and other PCIe cards on Thunderbolt-equipped Mac, Windows and Linux systems.

Advantages

The Echo Express SE IIIe enables multiple professional PCIe cards to be used simultaneously from a single Thunderbolt port, expanding a computer’s capabilities without internal installation. The compact aluminium enclosure provides durable desktop placement while an included 120W universal power adapter and an auxiliary power connector support power-hungry cards. Two Thunderbolt ports on the chassis preserve connectivity and the supplied Thunderbolt 3 cable and ThunderLok 3 retainer clip ensure full Thunderbolt bandwidth and a secure connection. The unit includes a temperature-controlled fan to maintain stable operation under load and offers broad OS compatibility for Mac, Windows 10 and Linux computers.

Suitable for

Key specifications

How to use

Install the required PCIe cards into the three available x8 slots inside the Echo Express SE IIIe, securing any double-width or daughter-board style cards as needed. Connect the unit to your computer using the supplied Thunderbolt 3 cable and attach the 120W power adapter. If a card requires extra power, attach a compatible cable to the auxiliary PCIe power connector. Power on the chassis and the host computer; the Thunderbolt connection will enumerate installed PCIe cards to the operating system. Install any vendor drivers or firmware on the host computer as required by each PCIe card to enable full functionality.

Recommendations

Place the chassis on a stable, well-ventilated desktop surface to ensure adequate airflow for the temperature-controlled fan. Use the supplied Sonnet Thunderbolt 3 cable and ThunderLok 3 retainer clip to maintain full bandwidth and prevent accidental disconnection. For cards that draw significant power, confirm compatibility with the auxiliary power connector and verify any vendor power requirements before prolonged high-load operation.