Technical Specifications

Mac, Windows, and Linux Logos


Mac Compatibility

  • macOS Big Sur compatible
  • Mac with Thunderbolt 3 ports and macOS 10.13.6+
  • Automatically accelerates AMD RX eGPU connected monitors, and games and select apps run on those monitors(3)
  • macOS drivers for NVIDIA GPU cards are not compatible with Thunderbolt Technology
  • One eGFX Breakaway Box eGPU (WX 9100, for example) supports up to six external 4k monitors @60Hz
  • Mac with Thunderbolt 3 ports and macOS 10.14.6+ (Mac mini see note 10)
    Additional Features:
  • Support added for AMD RX 560 and RX 590 AMD GPUs
  • Accelerate games and applications run on the internal display (or Thunderbolt Display) by selecting the App, selecting “Get Info”, and checking “Prefer External GPU”(4)
  • Windows 10 support under Parallels Desktop for Mac(5)
  • Support for two eGFX Breakaway Box eGPUs and up to twelve external 4k monitors @60Hz
  • Mac with Thunderbolt 3 ports and macOS 10.15.7+
    Additional Features:
  • Support added for AMD RX 5500, 5500 XT, 5600, 5600 XT, 5700, 5700 XT
  • Apple M1 Macs do not yet support eGPUs
  • Supports VIVE and VIVE Pro with AMD Radeon RX 480 or better(6)
  • External GPUs not supported by Thunderbolt 2 or Thunderbolt equipped Macs(7)
  • External GPUs not supported on Windows 10 under Boot Camp
  • Certified with all generation Thunderbolt Macs to support Thunderbolt-compatible non-GPU cards, such as AVID HDX(8) and RED ROCKET-X

Windows Compatibility

  • Windows PC with a Thunderbolt 3 port
  • GPU card use requires an eGFX-enabled Windows PC
  • Windows 10 (64-bit Edition, Version 1809 or greater)
  • Supports VIVE and VIVE Pro with NVIDIA GTX 1060 or AMD Radeon RX 480 or better(6)

Monitor Compatibility

  • 1080P monitors using DP or HDMI ports
  • 4K and 5K monitors using DP or HDMI ports
  • 4K, 5K, and 6K Thunderbolt 3 monitors require a GPU card with USB-C output(12)
  • 49” 5120x1440 Dual QHD monitors using a DP port:
  • Dell Ultrasharp 49 Curved Monitor U4919DW
  • LG 49 inch 32:9 UltraWide Dual QHD IPS Curved LED Monitor 49WL95C-W
  • Philips Brilliance 32:9 Superwide Curved LCD Display 499P9H/27
  • Samsung 49” CRG9 Dual QHD Curved QLED Gaming Monitor LC49RG90SSNXZA

    Graphics Card Compatibility Chart

    List of AMD and NVIDIA GPU cards arranged by card manufacturer, compatibility determined by the card’s power requirements, and Breakaway Box model’s power capabilities

    PDF Icon


    Part Number

    • GPU-550W-TB3 (eGFX Breakaway Box 550)
    • GPU-650WOC-TB3 (eGFX Breakaway Box 650)


    • 2-year

    Form Factor

    • Desktop external GPU system

    External Connectors

    • One Thunderbolt 3
    • Power (C14-type)

    Internal Connectors

    • Two 8-pin (6+2 pin) power connectors

    Expansion Slot

    • One x16 mechanical (x4 electrical, Thunderbolt 3 spec) PCIe 3.0

    PCIe Card Supported

    • One full-length, full-height, double-width PCIe card

    Liquid Cooling Support

    • Supports 120mm x 1 water block coolers

    Power Supply

    • Part Number GPU-550W-TB3
    • Universal 550W, 110-240V AC, 50-60 Hz
    • Equivalent to 600W recommended system power
    • Supports up to 375W card
    • Part Number GPU-650WOC-TB3
    • Universal 650W, 110-240V AC, 50-60 Hz
    • Equivalent to 750W recommended system power
    • Part number GPU-650OC-TB3 provides laptop charging up to 100W

    Eco-Friendly Power Management

    • See video for description

    Standy Power(9)

    • Part Number GPU-550W-TB3 consumes 8W (sleep) / 10W (idle)
    • Part Number GPU-650WOC-TB3 consumes 5W (sleep) / 8W (idle)

    Operating Temperatures

    • 0˚C to 35˚C (32˚F to 95˚F)

    Dimensions (WxDxH)

    • 7.25 x 13.38 x 8 in. (18.5 x 34.0 x 20.2 cm)


    • 7.1 lbs (3.2 kg)

    RoHS Compliant

    • Yes

    Package Contents

    • Part Number GPU-550W-TB3
    • eGFX Breakaway Box 550 enclosure
    • Power cord
    • 0.5-meter Thunderbolt 3 (40Gbps) cable
    • Documentation
    • Part Number GPU-650WOC-TB3
    • eGFX Breakaway Box 550 enclosure
    • Power cord
    • 0.7-meter Thunderbolt 3 (40Gbps) cable
    • Documentation

    Support Links

    Support Knowledge Base

    Drivers, Documentation, FAQs

    Product Manual

    Step-by-step card installation instructions

    PDF Icon

    External Graphics Setup and Usage Guide (macOS)

    PDF Icon

    External Graphics Setup and Usage Guide (Windows 10)

    PDF Icon

    Technical Notes

    • eGFX Breakaway Box models support up to a standard full-height, full-length, double-width card. Cards with three power connectors are not supported.
    • While the eGFX Breakaway box features a 40Gbps Thunderbolt 3 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 also requires the use of the included Thunderbolt 3 (40Gbps) cable, or other Thunderbolt 3 (40Gbps) cables; look for the Thunderbolt icon AND the number 3 on the connector housings to identify these cables.
    • A few professional applications (such as DaVinci Resolve or Cinema 4D) have menu options to use the external GPU even if the app is run on the internal monitor. Final Cut Pro requires 10.14.1+ for external GPU acceleration.
    • Ultimate gaming performance is attained by using a display attached to eGPU.
    • See Using eGPU with Parallels Desktop for Mac.
    • Not compatible with VIVE Wireless Adapter.
    • Neither Apple, nor AMD, nor Sonnet support eGPUs on Thunderbolt 2 or Thunderbolt Macs. There is a method to support Thunderbolt 2 and Thunderbolt Macs from Purge-Wrangler. Not every Mac is supported. If your Mac has a discrete NVIDIA eGPU, this method will not work. If you have any trouble, our support teams cannot assist you.
    • Power adapter cable for Avid Pro Tools | HDX card sold separately.
    • Plus power delivery to laptop, if activated.
    • Under macOS 10.14.6, a Mac mini is compatible with a Breakaway Box with Vega 56, Vega 64, WX 8200, and WX 9100. A Mac mini with a Breakaway Box with an RX 560/570/580/590 must be booted with a monitor connected to the Mac mini’s HDMI port. The monitor may be moved to the GPU after booting. This anomaly is fixed in macOS 10.15.7+.
    • 8K displays require a GPU card that supports 8K displays.
    • For example, the AMD Radeon Pro W5700 has a USB-C Alt-Mode DisplayPort output.



    Avid Pro Tools|HDX PCIe Card Power Adapter Cable

    Part No. TCBC-HDXB

    • Power cable to connect a Pro Tools|HDX PCIe card in eGFX Breakaway Box
    Thunderbolt 3 Cable (0.7-meter)

    Thunderbolt 3 Cable (0.7-meter)

    Part No. TCB-TB3-07M

    • 0.7-meter Thunderbolt 3 (40Gbps) cable
    • Delivers full 40Gb/s bandwidth
    • Supports 100W of Power Delivery (PD)

    eGFX Breakaway Box