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eGFX Breakaway Box
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Driver (0)
Firmware (0)
Manual (4)
IDDownload TitleDownload LinkPost Date
910 eGFX Breakaway Box Developer Edition Quick Start GuideJun-30-17
912 eGFX Breakaway Box User's Guide [English]Aug-04-17
918 eGFX Windows 10 Installation Guide Aug-08-2017
969 eGFX macOS 10.13.2 Installation Guide - AMD Dec-07-2017
Operating System Requirements: macOS 10.13.2
File Name: egfx_macos_high_sierra_ug.pdf
File Size: 79.3 KB
Support for select external AMD Graphics cards on macOS High Sierra will be officially beta until spring 2018. Currently, internal video is not accelerated by an external graphics card. Sonnet has organized what we consider to be the most accurate of the information available in this installation guide. Note that you will not be able to obtain support from Apple or AMD for external graphics under macOS at this time. If you have any issues using any Sonnet product, please contact Sonnet customer service at

These configurations have plug-and-play beta support with macOS High Sierra 10.13.2 with Thunderbolt 3 Macs:
Breakaway Box 350 with Radeon RX 470, 480, 570 or 580
Breakaway Box 350 Developer Edition bundled with Sapphire Radeon PULSE RX 580
Breakaway Box 550 with Radeon RX 470, 480, 570, 580, or Vega 56
Breakaway Box 550 with Radeon RX 470, 480, 570, 580, Vega 56, Vega 64 or WX 9100 if connecting to an iMac (which does not use Power Delivery)

Check that you have a Macintosh that has beta support for external AMD Graphics. All Thunderbolt 3 Macs are included:
• iMac 2017 models 18,1-18,3
• iMac Pro 2017 model TBD
• MacBook Pro 2016 models 13,1-13,3
• MacBook Pro 2017 models 14,1-14,3
FAQ (10)
IDArticle TitlePost Date
914 Does the Breakaway Box 550 support the AMD Radeon Vega 64 or WX9100? Dec-15-17
915 The GPU-350W-TB3 and GPU-350W-TB3Z both have 350W power supplies, but only GPU-350W-TB3Z supports high end cards such as NVIDIA Titan Xp. Why? Aug-18-17
917 How will using Macs of different Thunderbolt generations affect gaming performance with external graphics? Aug-03-17
925 My eGFX Breakaway Box won't turn on. Aug-26-17
926 I have a Windows computer with an internal discrete NVIDIA dGPU and the external NViDIA eGPU is not recogized. Dec-03-17
930 What kind of performance can I expect from the NVIDIA Titan Xp (Pascal) with the eGFX Breakaway Box? Nov-06-17
931 Can I use a Sonnet eGFX Breakaway Box with Boot Camp? Dec-05-17
938 What power cable do I need for the Avid HDX card? Nov-06-17
970 Under macOS, I can connect one, two, or three displays to the Breakaway Box or Puck, but when I connect the second, third or fourth, respectively, they all go black. Dec-15-17
978 Under macOS, Sonnet's Breakaway Box and Puck can support 4 displays. How can I tile them into one large display? Dec-15-17

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