Technical Specifications

Mac Logo


Mac Compatibility

  • Mac (Intel) with Thunderbolt 3 ports
  • macOS 10.15.7+
  • macOS Sonoma compatible
  • Thunderbolt 2 or Thunderbolt 1 Macs do not support eGPUs
  • Mac (M series) computers do not support eGPUs

Windows Compatibility

  • Not certified for use under Windows; see tech note for information

Monitor Compatibility

  • 4K @ 60Hz monitors using DP or HDMI ports
  • 4K, 5K, and 6K monitors @ 60Hz using Thunderbolt 3/USB-C port
  • 49” 5120x1440 Dual QHD monitors using 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


Part Number

  • GPU-RX55-TB3-S (eGPU Breakaway Puck Radeon RX 5500 XT)
  • GPU-RX57-TB3-S (eGPU Breakaway Puck Radeon RX 5700)


  • 2-year

Form Factor

  • Portable external GPU system

Video Memory

  • Part number GPU-RX55-TB3-S
  • 4 GB GDDR6
  • Part number GPU-RX57-TB3-S
  • 8 GB GDDR6

External Connectors

  • Two Thunderbolt
  • One DisplayPort
  • One HDMI
  • Two USB 3.2 Type A
  • One 4-pin power DIN

Display Connectivity

  • Thunderbolt Port
  • 4K, 5K or 6K @ 60Hz Thunderbolt 3 monitor
  • 4K or 5K @ 60Hz USB-C monitor
  • 4K @ 60Hz DisplayPort monitor using USB-C to DisplayPort cable or adapter (not included)
  • Two 4k @ 60Hz HDMI monitors using Sonnet Thunderbolt Dual HDMI Adapter (sold separately)
  • Two 4K @ 60Hz DisplayPort monitors using Sonnet Thunderbolt Dual DisplayPort Adapter (sold separately)
  • DisplayPort 1.4a Port
  • 8K @ 30Hz
  • 5K @ 60Hz
  • 4K @ 120Hz
  • 1440p @ 240Hz
  • 1080p @ 360Hz
  • HDMI 2.0b Port
  • 4K @ 60Hz monitor

USB Peripheral Connectivity

  • Cables Supported
  • With USB Type A connector
  • Peripherals Supported
  • Supports all industry standard USB 3, 2.0 and 1.1 devices
  • Data Transfer Rate
  • USB 3.2 Gen 1 (aka USB 3.1 Gen 1, USB 3.0): 5Gb/s

Thunderbolt Peripheral Support

  • Yes

Supported Technologies

  • HDCP 2.2
  • HDR (High Dynamic Range)
  • Intelligent Fan Control 
  • OpenCL 2.0
  • OpenGL 4.5
  • Metal

Power Delivery

  • Provides laptop charging up to 60W

Power Adapter

  • Universal 230W, 100-240V AC, 50-60 Hz

Operating Temperatures

  • 0˚C to 35˚C (32˚F to 95˚F)

Dimensions (WxDxH)

  • Puck: 6 x 5.1 x 2 in. (15.2 x 13 x 5.1 cm)
  • Power Supply: 3 x 6.1 x 1.2 in. (7.5 x 15.5 x 3.1 cm)


  • Puck and Power Supply: 3.25 lbs (1.47 kg)
  • Complete Package: 4.8 lbs (2.18 kg)


  • RoHS 3 (Directive 2015/863)
  • IEC62368-1 and IEC62368-2 Safety
  • PSE Diamond certified power supply

Package Contents

  • eGPU Breakaway Puck
  • Power adapter
  • Region-specific power cable for US, Australia, Europe, Japan, Switzerland, or UK
  • 0.5-meter Thunderbolt 3 cable
  • Documentation
eGPU Breakaway Puck Package Contents

Support Links

Support Knowledge Base

Documentation and FAQs

macOS eGPU Info

Official Thunderbolt-connected external graphics card support for the eGPU Breakaway Puck Radeon RX 5500 XT and eGPU Breakaway Puck Radeon RX 5700 is limited to macOS Catalina 10.15.7 (and greater) and Thunderbolt 3 equipped Macs. See the following PDF for compatibility details.

macOS eGPU Info PDF Download Link

Product Manual

eGPU Breakaway Puck RX 5500 XT/5700 Manual PDF Download Link

Technical Notes

  • Apple notebooks with 45-60W AC power adapters may be powered and charged by the eGPU Breakaway Puck, even while gaming. Apple notebooks with AC power adapters rated at 85-100W will accept 60W power from the Puck but will slowly discharge. Connecting bus-powered storage to a laptop will draw additional power that may affect the charging (discharging) rate. When sleeping, any connected computer that supports Thunderbolt 3 charging will be charged to 100% by the Puck.
  • Support for four 4K monitors requires a Sonnet Thunderbolt Dual DisplayPort Adapter or Thunderbolt Dual HDMI Adapter (both sold separately).
  • Ultimate gaming performance is attained by using a display attached to eGPU.



PuckCuff VESA Mounting Bracket Kit


  • VESA mounting kit for eGFX Breakaway Puck
  • Mounts eGFX Breakaway Puck to the back of a compatible VESA monitor or multi-monitor stand
Thunderbolt Cable (0.7-meter)

Thunderbolt 3 Cable (0.7-meter)

Part No. TCB-TB3-07M

  • 0.7-meter Thunderbolt 3 cable
  • Delivers full 40Gbps bandwidth
  • Supports 100W of Power Delivery (PD)
Thunderbolt Dual HDMI Adapter

Thunderbolt Dual HDMI Adapter


  • Connects up to two HDMI displays to a single 40Gbps Thunderbolt port
  • Enables you to work more efficiently
  • No power adapter required
  • Built-in audio support
  • Compact and rugged design
  • Won't drain system resources
Thunderbolt Dual DisplayPort Adapter

Thunderbolt Dual DisplayPort Adapter

Part No. TB3-DDP4K

  • Connects up to two DisplayPort displays to a single 40Gbps Thunderbolt port
  • Enables you to work more efficiently
  • No power adapter required
  • Built-in audio support
  • Compact and rugged design
  • Won't drain system resources

eGPU Breakaway Puck RX 5500 XT/5700