Echo Express SE III


Echo Express SE III 3-slot Thunderbolt 3 Expansion Chassis for PCIe cards.

Connect Three PCIe Cards to Any Mac with Thunderbolt 3 Ports

Sonnet’s Echo Express SE III is a compact desktop Thunderbolt-to-PCIe card expansion system that enables you to connect three professional PCIe cards—including video capture, audio interface, SAS or SATA HBA, 16Gb or 8Gb Fibre Channel, 10 Gigabit Ethernet, and RAID controllers—at the same time to any Mac with a Thunderbolt 3 port.

The Echo Express SE III features a 40Gbps Thunderbolt 3 interface, which offers double the PCIe bandwidth and connectivity of Thunderbolt 2, and yields up to 2750 MB/s of bandwidth, enabling it to support 4K video capture and processing cards at high frame rates, and 16Gb FC cards and dual-port 10GbE cards at full performance. With the ability to handle multiple demanding, high performance PCIe cards, support for connecting two 4K displays @60Hz or one 5K display @60Hz, and support for a vast array of Thunderbolt and USB devices, Thunderbolt 3 is a leap forward in every way.


  • Connects Three PCIe cards to any Mac with Thunderbolt 3 Ports. 
  • 40Gbps Thunderbolt 3 Interface. 
  • Two Thunderbolt 3 (USB-C) Ports. 
  • Rugged Aluminum Housing. 
  • Temperature-Controlled Fan. 
  • Energy Saver Mode - Powers on/off automatically with the computer. 
  • Thunderbolt Cable & ThunderLok included.