Echo Express III-D Thunderbolt 2-to-PCIe Expansion Chassis, Desktop, Three slots model no ECHO-EXP3FD

Use Up to Three PCIe Cards with Computers Lacking Expansion Slots

Provides PCIe Card Expansion
Use high-performance PCIe cards with any Mac with a Thunderbolt port
Thunderbolt 2 Interface
Maximum performance with computers with Thunderbolt 2 technology, backward compatible with host computers and other devices equipped with 10Gbps Thunderbolt technology
When available, upgrade to 40Gbps Thunderbolt 3 Technology with a replacement Thunderbolt interface card
Three PCIe Slots
Supports three full-length, full-height, single-width cards, or one double-width card plus one single-width card
Remarkably Quiet
Large, temperature-controlled, variable-speed fans that automatically cool the cards, plus computer-modeled design that reduces airflow turbulence and velocity, combine to provide quieter cooling for all cards
Integrated Universal Power Supply
Built-in 300W power supply with 75W auxiliary power connector 
Rugged Aluminum Housing
Provides robust and secure protection for any environment
Every Thunderbolt-Compatible Card Supported
Works with every Thunderbolt-compatible PCIe card, regardless of length or height
New Thunderbolt Cable & ThunderLok IncludedIncludes Thunderbolt cable and ThunderLok Thunderbolt connector retainer clip to secure cable from accidental disconnections

Desktop Thunderbolt 2-to-PCIe card expansion system

External Connectors
Two Thunderbolt 2 ports
Internal Connector
6-pin Mini-Fit Jr (same type as on legacy Mac Pro motherboard; provides up to 75W of power for PCIe cards that require supplemental power)
Expansion Slots
  • One x8 mechanical (x8 electrical) PCIe 2.0
  • One x16 mechanical (x8 electrical) PCIe 2.0
  • One x8 mechanical (x4 electrical) PCIe 2.0
PCIe Cards Supported
  • One full length, full-height, double-width PCIe card, plus one single-width card


  • Three full length, full-height, single-width PCIe cards
Compatible PCIe Cards
Up-to-date PCIe cards listed on Sonnet supporting PCIe Card Thunderbolt Compatibility Chart
Power Supply
Universal 300W, 115-230V AC, 50-60 Hz
Mac Compatibility

  Mac® with a Thunderbolt or Thunderbolt 2 port

Mac with a Thunderbolt 3 port with an Apple Thunderbolt 3 (USB C) to Thunderbolt 2 Adapter

OS X 10.8.5+

macOS Sierra compatible

PC Compatibility

 PC with a Thunderbolt 2 port

Windows 10, 8, 7 

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Echo Express III-D Thunderbolt 2-to-PCIe Expansion Chassis, Desktop, Three slots model no ECHO-EXP3FD

  • Brand: Sonnet
  • Product Code: ECHO-EXP3FD
  • Availability: 29
  • ₹89,900.00