Technical Specifications

Mac and Linux Logos


Mac Compatibility

  • Mac (Intel) with Thunderbolt 3 ports
  • Accelerate applications and games run on the internal display (or Thunderbolt Display) by selecting the App, selecting “Get Info”, and checking “Prefer External GPU”(3)
  • macOS Catalina 10.15.7+
    • macOS Big Sur compatible
    • External GPUs not supported on Thunderbolt 2 or Thunderbolt Macs
    • Apple M1 Macs do not yet 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 3
      • One DisplayPort
      • One HDMI
      • Two USB 3.2 Type A
      • One 4-pin power DIN

      Display Connectivity

      • Thunderbolt 3 Port
      • DisplayPort 1.4 Port
      • 4K @60Hz monitor
      • Dual QHD (5120x1440) @60Hz monitor
      • 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 3 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)

      Dimensions WxDxH (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
      • PSE Diamond certified power supply

      Package Contents

      • eGPU Breakaway Puck
      • Power adaper
      • Power cord
      • 0.5-meter Thunderbolt 3 (40Gbps) cable
      • Documentation
      eGPU Breakaway Puck Package Contents

      Support Links

      Support Knowledge Base

      Drivers, Documentation, 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 PDF for compatibility details.

      PDF Icon

      Product Manual

      PDF Icon

      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 3 to Dual HDMI 2.0 Adapter or Thunderbolt 3 to Dual DisplayPort Adapter (both sold separately).
      • Ultimate gaming performance is attained by using a display attached to eGPU.



      PuckCuff VESA Mounting Bracket Kit

      Part No. CUFF-PUCK

      • VESA mounting kit for eGFX Breakaway Puck
      • Mounts eGFX Breakaway Puck to the back of a compatible VESA monitor or multi-monitor stand
      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)
      Thunderbolt 3 to Dual DisplayPort Adapter

      Thunderbolt 3 to Dual DisplayPort Adapter

      Part No. TB3-DDP4K

      • Connects up to two DisplayPort displays to a single Thunderbolt 3 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 3 to Dual HDMI Adapter

      Thunderbolt 3 to Dual HDMI Adapter

      Part No. TB3-DHDMI

      • Connects up to two HDMI displays to a single Thunderbolt 3 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