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Halloween Special Sonnet Duomodo Echo Iii Pcie Card Expansion Module Now 50% Cheaper [s7iEn5m4]

$57.99 $185.99 -69%

The DuoModo Echo III Module connects up to three PCIe cards to computers without card slots.The module supports three full-height, full-length Thunderbolt-compatible non-GPU PCIe cards; provides 400W of power for the most demanding of PCIe cards, inc

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The DuoModo Echo III Module connects up to three PCIe cards to computers without card slots.

The module supports three full-height, full-length Thunderbolt-compatible non-GPU PCIe cards; provides 400W of power for the most demanding of PCIe cards, including qualification from Avid for Pro Tools | HDX PCIe cards;  features quiet, dual temperature-controlled Noctua fans rated at 17 dbA; and connects through super fast 40Gbps Thunderbolt interface.

Key Features

  • Three Versatile PCIe Slots
  • Supports Three Full-height, Full-length PCIe Cards
  • One x16 Plus Two x8 PCIe 3.0 Slots
  • Supports Every Thunderbolt-compatible non-GPU Card
  • AVID QUALIFIED - Supports up to Three Avid Pro Tools | HDX PCIe Cards
  • View PDF of Supported PCIe Cards

400W of Power

  • Built-in 400W Power Supply with 75W Auxiliary Power Connector
  • Supports Power-hungry, non-GPU Cards, Including Avid HDX
  • Powers On and Off Automatically with Connected Computer

Quiet Fans

  • Dual Noctua Fans Offer Ultra-quiet Operation
  • Temperature-controlled, Variable-speed
  • Rated at 17 dbA

Thunderbolt 3 Interface

  • Two Thunderbolt 3 Ports
  • 40Gbps Thunderbolt Interface Offers 3000 MB/s of PCIe Bandwidth with Thunderbolt 4 computers; 2570 MB/s with Thunderbolt 3 computers
  • Compatible with Apple® M1 Series and Intel® Thunderbolt 4 and Thunderbolt 3
  • Thunderbolt Cable Included
  • ThunderLok 3 Thunderbolt Connector Retainer Clip Included

Why Sonnet?

  • 2-year Product Warranty
  • Free Lifetime Customer Technical Support
  • Designed and Made In the USA
Specifications
  • Part Number: DM-MOD-E3
  • Warranty: 2-year
  • Form Factor: Expansion system module
  • External Connectors:
    • Two Thunderbolt ports
    • 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)(1):
    • 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:
    • One full-length, full-height, double-width PCIe card, plus one single-width card or
    • Three full-length, full-height, single-width PCIe cards
  • Power Supply: Universal 400W, 115-230V AC, 50-60 Hz(8)
  • Operating Temperature: 0ºC to 35ºC (32ºF to 95ºF)
  • Dimensions (WxDxH): 3.3 x 16.6 x 8.5 in. (8.4 x 42.2 x 21.7 cm)
  • Weight: 4.95 lbs (2.25 kg)
  • Compliance: RoHS 3 (Directive 2015/863), IEC62368-1 and IEC62368-2 Safety
  • Package Contents:
    • Echo III Module
    • Region-specific power cable for US, Australia, Europe, Japan, Switzerland, or UK
    • 6-pin auxiliary power cable
    • Thunderbolt 3 cable
    • ThunderLok 3 Thunderbolt connector retainer clip(2)
    • Mounting screws
    • Documentation
  • Product Manual: PDF
  • Technical Notes:
    • When set to HDX compatibility mode, PCIe slots operate in PCIe 2.0 mode and the chassis’ bandwidth is limited to 1750 MB/s.
    • ThunderLok 3 compatible specifically with Sonnet 0.5- and 0.7-meter Thunderbolt 3 cables.
    • While the Echo III features a 40Gbps Thunderbolt interface, some computers equipped with Thunderbolt 3 use an x2 PCIe lane implementation of Thunderbolt 3 technology that limits PCIe performance to 20Gbps.
    • Full performance requires the use of the included or comparable 40Gbps Thunderbolt cables, look for the Thunderbolt icon AND the number 3 on the connector housings to identify these cables. Full performance supported by any Thunderbolt 4 cable.
    • Second Thunderbolt port supports Thunderbolt 2 and Thunderbolt peripheral devices on Macs when used with the Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter, sold separately.
    • Second Thunderbolt port supports USB 3.2 Gen 1 (5Gb) or Gen 2 (10Gb) devices when connected with proper cable or adapter (sold separately).
    • Assuming that a 40Gbps Thunderbolt connection is established, all Thunderbolt 3 computers support one 4K monitor directly attached to the pass-through Thunderbolt port, without affecting PCIe bandwidth to the device. Using two 4K monitors or a single 5K monitor attached to the pass-through Thunderbolt port reduces available PCIe bandwidth to the device. Two 4K monitors requires either:
    • Power supply will operate as low as 90VAC, with linear power derating from 400W @ 115VAC to 320W @ 90VAC.
Compatibility
  • Mac Compatibility:
    • Mac (M series) with PCIe cards that have compatible drivers
    • Mac (Intel) with Thunderbolt 3 ports
    • Mac with a Thunderbolt 2 or Thunderbolt port with an Apple Thunderbolt 3 (USB-C) to Thunderbolt 2 Adapter plus a Thunderbolt 2 cable (both sold separately)
    • macOS® 10.12.6+
    • macOS Monterey compatible
  • Windows Compatibility:
    • Windows 10 computer with Thunderbolt 4 or Thunderbolt 3 ports
    • Windows 11 does not support multiple-slot Thunderbolt expansion systems. We are working with Microsoft to resolve the issue.
  • Linux Compatibility:
    • Linux® computer with Thunderbolt 3 ports
    • Linux Kernel 5.0+
  • PCIe Cards Compatibility: For a list of compatible PCIe cards, see the following PDF
Product videos

What Our Customers Say

January 2, 2026

Absolutely no complaints!

It's a very well-made and powerful item. I really love it.

- Brad P..

January 2, 2026

Absolutely no complaints!

This product is a great example of modern, efficient technology.

- Cayson C..

January 2, 2026

Absolutely no complaints!

The performance is flawless and the quality is exceptional.

- Robin V..

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