System Requirements

  • • Available DisplayPort™ Alternate Mode over USB-C® connector required.
  • • DisplayPort™ v1.2 required on graphics card or video source to support 4K @ 30 Hz resolution.
  • • Available USB-C® port (USB™ 3.1 is recommended) with support for USB™ Power Delivery and DisplayPort™ Alternate Mode to ensure proper functionality.
  • • Windows® 11,10 / macOS® / Chrome OS™

Special Notes

  • • DisplayPort™ Alternative mode is required to output to a display via the HDMI™ port.
  • • Windows® 10-11 / macOS® / Chrome OS™ compatible
  • • If you are using a high-powered USB™ device, please attach a USB-C® power adapter to the JCA351 power delivery port for maximum performance.
  • • To ensure files copy completely, do not remove the USB-C® power adapter while copying files.
  • • Power adapter not included. If applicable, please use the power adapter that came with your computer.
  • • Your mobile device might require more power than your charger allows when using the adapter and charging your device simultaneously. To ensure the JCA351 powers and charges your mobile device while in use, a higher wattage power adapter may be required.



2 Year Limited

Host Connector


Video Output


Power Source

Bus-Powered, Self-powered

Audio Supported


USB™ Pass-Through



1 – USB-C® PD for upstream charging

1 – 4K HDMI™ Output

1 – Gigabit Ethernet


Maximum Display Resolution

3840 x 2160

Maximum Display Refresh Rate

30 Hz

Maximum Data Transfer Rate


Displays Supported


Audio Channel

2.1 via HDMI™


Power Delivery


Power Consumption


PD Input Current

Up to 20V

PD Input Voltage

Up to 5A

PD Output Current

Up to 20V

PD Output Voltage

Up to 4.5A

Physical Specifications



Enclosure Type

ABS Plastic

Cable Length

7.87 in. (20 cm)

Product Height

1.96 in. (50 mm)

Product Width

3.14 in. (80 mm)

Product Depth

0.55 in. (14 mm)

Product Weight

1.83 oz (52g)

Storage Temperature

14 to 140°F (-10 to 65°C)

Storage Humidity

< 85% non-condensing

Operating Temperature

32 to 118°F (0 to 47°C)

Operating Humidity

< 85% non-condensing

Package Contents

  • • 1 - JCA351 USB-C® to 4K HDMI™ Ethernet Adapter
  • • 1 - Quick Installation Guide (QIG)