Echo III Three-Slot Full-Length Thunderbolt 5 PCIe Card Module

Three Full-Length PCIe Slots
Supports up to three full-height, full-length PCIe cards with one x16 and two x8 PCIe 3.1 slots.

Thunderbolt 5 Performance
Provides up to 3400 MB/s aggregate, bi-directional PCIe bandwidth to installed cards when connected to a Thunderbolt 5 computer.

Broad PCIe Card Support
Supports compatible single- and double-width PCIe 4.0, 3.1, 2.0, and 1.1 non-GPU cards for video, audio, networking, storage, and other specialized applications.

Avid Pro Tools | HDX Support
Qualified by Avid Audio Group for configurations using up to three Pro Tools | HDX PCIe cards.

Built-In 400W Power Supply
The integrated universal 400W power supply provides ample power for demanding professional PCIe configurations.

75W Auxiliary Power
A 75W auxiliary power connector supports compatible non-GPU PCIe cards requiring additional power.

Ultra-Quiet Cooling
Dual temperature-controlled, variable-speed Noctua fans rated at 17 dBA provide efficient cooling for noise-sensitive environments.

Automatic Power Control
The module automatically powers on and off with the connected computer without requiring a separate power switch.

Dual Thunderbolt 5 Ports
Two Thunderbolt 5 ports provide computer connectivity plus an additional connection for a compatible Thunderbolt or USB peripheral.

Peripheral Power
The secondary Thunderbolt port supplies up to 15W to compatible bus-powered Thunderbolt or USB devices.

5K Display Support
The secondary Thunderbolt connection can support one compatible 5K display while retaining PCIe bandwidth for installed cards.

Secure Cable Connection
The included ThunderLok-A connector lock helps prevent accidental Thunderbolt cable disconnections.

General Specifications
Product Type: Thunderbolt 5 to PCIe card expansion module
Configuration: 3-slot expansion module
Enclosure Compatibility: Compatible Sonnet rackmount expansion enclosures
Supported PCIe Cards: Thunderbolt-compatible non-GPU PCIe cards

PCIe Specifications
PCIe Slots: 3
Slot Configuration: 1 x PCIe 3.1 x16, 2 x PCIe 3.1 x8
Supported Card Height: Full-height
Supported Card Length: Full-length
Supported Card Width: Single-width and double-width
Supported PCIe Generations: PCIe 4.0, 3.1, 2.0, 1.1
Aggregate PCIe Bandwidth: Up to 3400 MB/s bi-directional with Thunderbolt 5 host
Avid Pro Tools | HDX Support: Up to 3 cards

Thunderbolt Specifications
Interface: Thunderbolt 5
Thunderbolt Ports: 2
Host Compatibility: Thunderbolt 5, Thunderbolt 4, Thunderbolt/USB4
Secondary Port Power: Up to 15W
Display Support: Up to 1 x 5K display via secondary Thunderbolt port

Power Specifications
Power Supply: Built-in universal 400W
Auxiliary Power: 75W
Power Control: Automatic power on/off with connected computer

Cooling Specifications
Cooling: Dual Noctua fans
Fan Control: Temperature-controlled, variable-speed
Fan Noise Level: 17 dBA

Computer Compatibility
Mac: Thunderbolt 5, Thunderbolt 4, or Thunderbolt/USB4 equipped Mac
Windows: Thunderbolt 5, Thunderbolt 4, or USB4 equipped computer
Linux: Thunderbolt 5, Thunderbolt 4, or USB4 equipped computer

Operating System Compatibility
macOS: macOS 15 or later
Windows: Windows 11 25H2 or later, Windows Server 2025
Linux Kernel: 6.6 or later

Dimensions and Weight
Width: 19.13 in (48.57 cm)
Depth: 16.9 in (42.93 cm)
Height: 3.5 in (8.89 cm)
Weight: 19.4 lb (8.80 kg)

Included Accessories
Power Cable: Region-specific power cable
Auxiliary Power Cables: 6-pin PCIe auxiliary power cables, installed
Thunderbolt Cable: 0.8 m Thunderbolt 5 cable
Cable Lock: ThunderLok-A connector lock
Documentation: Product documentation