Compatibility

Mac Compatibility

• Mac with Thunderbolt 5, Thunderbolt 4, Thunderbolt/USB4, or Thunderbolt 3(1) ports
• macOS 15+; compatible with macOS 27

Windows Compatibility

• Windows computer with Thunderbolt 5, Thunderbolt 4, or USB4(2) ports
• Windows 11
• Windows Server 2025

Linux Compatibility

• Linux computer with Thunderbolt 5, Thunderbolt 4, or USB4 ports
• Linux with an actively supported LTS kernel

PCIe Card Compatibility

For a list of compatible PCIe cards, see the following PDF

Hardware

Part Number

• ECHO-EX-SE3E-T3
• ECHO-EX-SE3E-EU (EU countries)

Warranty

• 2-year

Form Factor

• Thunderbolt desktop enclosure

External Connectors

• Two Thunderbolt ports
• 12V power port

Internal Connector

• 6-pin auxiliary power; provides up to 75W of power for PCIe cards that require supplemental power

Expansion Slots

• One x8 mechanical (x4 electrical) PCIe 3.0
• Two x8 mechanical (x8 electrical) PCIe 3.0

PCIe Cards Supported

• One half-length+ (up to 7.75 inches long), double-width, full-height x8 PCIe card, plus one single-width card or
• Three half-length+, single-width, full-height x8 PCIe cards

Power Adapter

• Universal 120W, 100-240V, 50-60 Hz
• NRTL Certified

Operating Temperature

• 0ºC to 35ºC (32ºF to 95ºF)

Dimensions (WxDxH)

• 6.5 x 11 x 4.6 in. (16.5 x 27.9 x 11.7 cm)

Weight

• 3.7 lbs. (1.7 kg)

Package Contents

• Echo Express SE IIIe Thunderbolt Expansion System
• Universal power adapter
• Region-specific power cable
• 6-pin PCIe auxiliary power cable
• 0.8-meter Thunderbolt cable
• ThunderLok-A connector lock
• Documentation

Support Links

Support Knowledge Base

Echo Express SE IIIe Thunderbolt Expansion System Support

Product Documentation