Using the Puck
Under macOS you can configure applications to use the Puck with one of the following
methods:
Support Note:
to accelerate Metal, OpenGL, and OpenCL applications that benefit from a powerful
eGPU. Not all apps support eGPU acceleration; check with the application's developer to
learn more.
• Use the Prefer External GPU Option
Starting with macOS Mojave 10.14, you can turn on Prefer External GPU in specific
applications' Get Info panels in the Finder. This option enables the Puck to accelerate
apps on your computer's internal display (if equipped) or any display connected to
the Mac. Note that you won't see this option when the Puck isn't connected or if the
application self-manages its GPU selection. Some applications will ignore the Prefer
External GPU checkbox and directly select which graphics processors are used.
• Set a Puck-connected Display as the Primary Display
If you have an external display connected to your Puck, you can choose it as the
primary display for all apps. Since applications default to the GPU associated with the
primary display, this option works with a variety of applications. If you disconnect the
Puck, your Mac defaults back to the internal graphics processor that drives the built-in
display. When the Puck is reconnected, the external display will automatically be set as
the primary display.
Support Note:
and search "use an external graphics processor with your Mac".
Tips/General Information
• Before unplugging the Puck from your computer, click the eGPU icon
bar, and then select Disconnect.
• macOS High Sierra 10.13.4 and later don't support eGPUs in Windows using Boot
Camp or when your Mac is in macOS Recovery or installing system updates.
• If you have a Mac mini (2018) with FileVault turned on, make sure to connect your
primary display directly to Mac mini during startup. After you log in and see the macOS
Desktop, you can unplug the display from Mac mini and connect it to your eGPU.
• eGFX Puck Radeon RX 560 provides charging power up to 60W to compatible
computers, while the RX 570 model provides up to 45W.
Need More Information?
Please visit www.sonnettech.com/support/kb/kb.php, click on the Thunderbolt link, and
then click on the eGFX Breakaway Puck link for important information, useful tips, and
answers to frequently asked questions.
FCC Compliance
eGFX Breakaway Puck complies with Part 15 of the FCC Rules. Operation is subject to
the following two conditions: This device may not cause harmful interference, AND
this device must accept any interference received, including interference that may cause
undesired operation.
eGPU support in macOS High Sierra 10.13.4 and later is designed
For more detailed information on eGPU use, visit support.apple.com
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