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  • Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
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Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots
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Sonnet Echo Express SE IIIe Thunderbolt to PCIe Card Expansion System - Three PCIe 3.0 x8 Slots

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Product SKU: ECHO-EX-SE3E-T3
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Echo Express SE IIIe. 3-slot Desktop Thunderbolt to PCIe Card Expansion System for Computers with Thunderbolt 4 or Thunderbolt 3 Ports

Connect Three Full-height, Half-length+ PCIe Cards to Computers with Thunderbolt 3 or Thunderbolt 4 Ports
Although thin Mac®, Windows®, and Linux® computers with Thunderbolt™ ports offer processing power to spare, for many users (such as pros in the creative fields) onboard processing power alone is not enough.

Sonnet’s Echo™ Express SE IIIe is a compact, desktop Thunderbolt™ to PCIe card expansion system that enables you to connect three professional PCIe cards at the same time to any computer with Thunderbolt 3 or Thunderbolt 4 ports.

Echo Express SE IIIe - Desktop Expansion with Auxiliary Power Connector
Echo Express SE IIIe provides three PCIe card expansion slots in a compact desktop enclosure. Smaller than the 3-slot Echo III Desktop, the Echo Express SE IIIe is still large enough to support nearly every Thunderbolt 3 compatible, non-GPU PCIe card available.

With its three x8 slots, the SE IIIe supports PCIe 3.0, PCIe 2.0, and PCIe 1.1 cards up to 7.75 inches long. Got a double-width card? ‍Some specialty cards, such as RME’s HDSPe MADI FX, Blackmagic Design’s DeckLink 4K Extreme, and the Lynx AES16e 50, include a daughter card that mates with and provides additional external connections to the main card. The Echo Express SE IIIe provides the space to accommodate such cards. Need Extra Power?

Echo Express SE IIIe includes an auxiliary PCIe power connector, enabling you to install a card requiring extra power, such as theAJA® Kona® 5 and the Blackmagic DeckLink 4K Extreme 12G.

Key Features

  • For Computers with Thunderbolt 3 or Thunderbolt 4 Ports
  • Thunderbolt 3 Interface (40Gbps)
  • Two Thunderbolt 3 Ports
  • Quiet, Temperature-Controlled Fan
  • 120W Universal Power Adapter
  • Auxiliary Power Connector (for Power-Hungry PCIe Cards)
  • Rugged Aluminum Enclosure
  • Includes 0.7-meter Thunderbolt 3 Cable (unlike other brand of cables, Sonnet's cable provides Thunderbolt 3's full 2750 MB/s bandwidth and supports up to 100W of power delivery)
  • Includes Sonnet Designed ThunderLok 3 Connector Retainer Clip (prevents accidental cable disconnections)
  • Mac, Windows, and Linux Compatible
  • 2-year Product Warranty
  • Free Lifetime Customer Technical Support
  • Designed and Made in the USA

The Thunderbolt Connection
Plugged into one of your computer's Thunderbolt 4 or Thunderbolt 3 ports, this compact desktop expansion system supports three professional PCIe cards (video capture; audio DSP; 6Gb or 12Gb SAS or SATA host bus adapter; 10Gb or 25Gb, Ethernet; or RAID controller).

  • Part Number: ECHO-EX-SE3E-T3
  • Warranty: 2-year
  • Form Factor: Thunderbolt desktop enclosure
  • External Connectors:
    • Two Thunderbolt ports(2)
    • 12V power port
  • Internal Connector: 6-pin Mini-Fit Jr (same type as on legacy Mac Pro motherboard; provides power for PCIe card that requires 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 PDF
  • Fan: Noctua NF-R8 redux 1800 at 17.1dBA
  • 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)
  • Compliance:
    • RoHS 3 (Directive 2015/863)
    • IEC62368-1 and IEC62368-2 Safety
  • Package Contents:
    • Echo Express SE IIIe Desktop System
    • Universal power adapter
    • Region-specific power cable for US, Australia, Europe, Japan, Switzerland, or UK
    • 6-pin PCIe auxiliary power cable
    • Thunderbolt 3 cable(3)
    • ThunderLok 3 Thunderbolt connector retainer clip(4)
    • Documentation
  • Product Manual PDF

Mac Compatibility

    • Mac (M series) with PCIe cards that have compatible drivers
    • Mac (Intel®) with Thunderbolt 3 ports
    • Mac (Intel) with a Thunderbolt 2 or Thunderbolt 1 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 Sonoma compatible

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 5.4+

PCIe Card Compatibility

    • For a list of compatible PCIe cards, see the following PDF - PCIe Cards Compatibility PDF

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