
Description
For creative pros using the latest portable, mini desktop and all-in-one computers in their workflows, onboard processing power alone is not enough to get the job done. While these Mac®, Windows®, and Linux® computers include high-performance Thunderbolt™ 4 or Thunderbolt 3 ports to support peripherals, what they lack is PCIe expansion slots to install specialty cards that add needed video and audio inputs, transcode data, and connect to high-speed shared storage and networks. Sonnet has a solution — the Echo™ III Desktop — a professional Thunderbolt to PCIe card expansion system that enables you to connect three (up to) full-length (12.28 inches long) PCIe cards at the same time, via a single cable.
Echo III Desktop
Echo III Desktop supports every Thunderbolt compatible, non-GPU PCIe 4.0, 3.0, 2.0, and 1.1 card available including video capture and transcoding; audio DSP; 6Gb or 12Gb SAS or SATA host bus adapter; 10Gb or 25Gb Ethernet; SSD storage; and other specialty types to your system.
Features:
- For Computers with Thunderbolt 4 or Thunderbolt 3 Ports
- Three PCIe 3.0 Slots – One x16 plus Two x8 Slots
- Supports Three Full-height, Single-width Cards, or One Double-width Card plus One Single-width Card
- Avid® Pro Tools | HDX Compatible
- Broad PCIe Card Compatibility Support
- Pro Power – Integrated 400W Power Supply with 75W Auxiliary Power
- Remarkably Quiet – Noctua Fans Rated at 17dBA
- 40Gbps Thunderbolt System
- Thunderbolt 3 Technology for Maximum Performance – Offers Four Lanes of Full PCIe Bandwidth for the Installed Cards (Thunderbolt 4 Would be Limited to One PCIe Lane Total.
- Two Thunderbolt Ports – One Port to Host Computer, Second Port for Thunderbolt Peripherals Daisy Chain
- Rugged Aluminum Housing
- Energy Savings – Powers On/Off Automatically with the Computer
- Mac, Windows, and Linux Compatible
- Avid Qualified
- 2-year Product Warranty
- Free Lifetime Customer Technical Support
- Designed and Made in the USA
| Compatibility | |
| Mac Compatibility | Mac (M series) with PCIe cards that have compatible drivers |
| Windows Compatibility | Windows computer with Thunderbolt 4 or Thunderbolt 3(1) ports Windows 10 Windows 11 22H2 build 22621.819 and newer |
| Linux Compatibility | Linux computer with Thunderbolt 4 or Thunderbolt 3 ports Linux Kernel 5.0+ |
| PCIe Card Compatibility | See Sonnet's website for the latest list. |
| Hardware | |
| Part Number | ECHO-3D-TB3 |
| Warranty | 2-year |
| Form Factor | Thunderbolt desktop enclosure |
| External Connectors | Two Thunderbolt ports(2) Power (C14-type) |
| 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 (Facing Rear, Left to Right)(3) | One x8 mechanical (x8 electrical) PCIe 3.0 One x16 mechanical (x8 electrical) PCIe 3.0 One x8 mechanical (x4 electrical) PCIe 3.0 |
| PCIe Cards Supported | Three full-length, full-height, single-width PCIe cards or One full-length, full-height, double-width PCIe card, plus one single-width card |
| Power Supply | Universal 400W, 115-230V AC, 50-60 Hz(4) |
| Operating Temperature | 0¼C to 35¼C (32¼F to 95¼F) |
| Dimensions (WxDxH) | 3.5 x 16.7 x 9 in. (8.9 x 42.4 x 22.9 cm) |
| Weight | 9.7 lbs (4.40 kg) |
| Compliance | RoHS 3 (Directive 2015/863) IEC62368-1 and IEC62368-2 Safety |
| Package Contents | Echo III Desktop System Region-specific power cable for US, Australia, Europe, Japan, Switzerland, or UK 6-pin PCIe auxiliary power cable Thunderbolt 3 cable(5) ThunderLok 3 Thunderbolt connector retainer clip(6) Documentation |
For creative pros using the latest portable, mini desktop and all-in-one computers in their workflows, onboard processing power alone is not enough to get the job done. While these Mac®, Windows®, and Linux® computers include high-performance Thunderbolt™ 4 or Thunderbolt 3 ports to support peripherals, what they lack is PCIe expansion slots to install specialty cards that add needed video and audio inputs, transcode data, and connect to high-speed shared storage and networks. Sonnet has a solution — the Echo™ III Desktop — a professional Thunderbolt to PCIe card expansion system that enables you to connect three (up to) full-length (12.28 inches long) PCIe cards at the same time, via a single cable.
Echo III Desktop
Echo III Desktop supports every Thunderbolt compatible, non-GPU PCIe 4.0, 3.0, 2.0, and 1.1 card available including video capture and transcoding; audio DSP; 6Gb or 12Gb SAS or SATA host bus adapter; 10Gb or 25Gb Ethernet; SSD storage; and other specialty types to your system.
Features:
- For Computers with Thunderbolt 4 or Thunderbolt 3 Ports
- Three PCIe 3.0 Slots – One x16 plus Two x8 Slots
- Supports Three Full-height, Single-width Cards, or One Double-width Card plus One Single-width Card
- Avid® Pro Tools | HDX Compatible
- Broad PCIe Card Compatibility Support
- Pro Power – Integrated 400W Power Supply with 75W Auxiliary Power
- Remarkably Quiet – Noctua Fans Rated at 17dBA
- 40Gbps Thunderbolt System
- Thunderbolt 3 Technology for Maximum Performance – Offers Four Lanes of Full PCIe Bandwidth for the Installed Cards (Thunderbolt 4 Would be Limited to One PCIe Lane Total.
- Two Thunderbolt Ports – One Port to Host Computer, Second Port for Thunderbolt Peripherals Daisy Chain
- Rugged Aluminum Housing
- Energy Savings – Powers On/Off Automatically with the Computer
- Mac, Windows, and Linux Compatible
- Avid Qualified
- 2-year Product Warranty
- Free Lifetime Customer Technical Support
- Designed and Made in the USA
| Compatibility | |
| Mac Compatibility | Mac (M series) with PCIe cards that have compatible drivers |
| Windows Compatibility | Windows computer with Thunderbolt 4 or Thunderbolt 3(1) ports Windows 10 Windows 11 22H2 build 22621.819 and newer |
| Linux Compatibility | Linux computer with Thunderbolt 4 or Thunderbolt 3 ports Linux Kernel 5.0+ |
| PCIe Card Compatibility | See Sonnet's website for the latest list. |
| Hardware | |
| Part Number | ECHO-3D-TB3 |
| Warranty | 2-year |
| Form Factor | Thunderbolt desktop enclosure |
| External Connectors | Two Thunderbolt ports(2) Power (C14-type) |
| 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 (Facing Rear, Left to Right)(3) | One x8 mechanical (x8 electrical) PCIe 3.0 One x16 mechanical (x8 electrical) PCIe 3.0 One x8 mechanical (x4 electrical) PCIe 3.0 |
| PCIe Cards Supported | Three full-length, full-height, single-width PCIe cards or One full-length, full-height, double-width PCIe card, plus one single-width card |
| Power Supply | Universal 400W, 115-230V AC, 50-60 Hz(4) |
| Operating Temperature | 0¼C to 35¼C (32¼F to 95¼F) |
| Dimensions (WxDxH) | 3.5 x 16.7 x 9 in. (8.9 x 42.4 x 22.9 cm) |
| Weight | 9.7 lbs (4.40 kg) |
| Compliance | RoHS 3 (Directive 2015/863) IEC62368-1 and IEC62368-2 Safety |
| Package Contents | Echo III Desktop System Region-specific power cable for US, Australia, Europe, Japan, Switzerland, or UK 6-pin PCIe auxiliary power cable Thunderbolt 3 cable(5) ThunderLok 3 Thunderbolt connector retainer clip(6) Documentation |
Your home for all things pro audio—backed by expertise and experience. Connect with us today.
Your home for all things pro audio—backed by expertise and experience. Connect with us today.


