j5create JCA399 USB-C® to HDMI™ 4K144Hz & USB™ 3.2 with Power Delivery 100W, Black

The j5create JCA399 adapter expands connectivity for laptops, tablets and smartphones by providing a compact hub with HDMI 4K at 144 Hz, a USB 3.2 (5 Gbps) Type-A port and a USB-C Power Delivery port supporting up to 100W. Its small form factor makes it easy to carry and place on a desk while enabling high-resolution video output and peripheral connection.

Advantages

The adapter supports HDMI output up to 4K at 144 Hz in extended and mirrored display modes, includes a 5 Gbps USB Type-A port for flash drives, keyboard or mouse, and offers USB-C Power Delivery 3.0 up to 100W to charge a connected laptop or mobile device while in use. The compact design saves desk space and simplifies multi-device connectivity without additional cables.

Suitable for

• Connecting a laptop, tablet or smartphone to an external monitor or TV
• High-refresh-rate gaming or video work at up to 4K 144 Hz
• Connecting USB peripherals such as flash drives, keyboard or mouse
• Charging a laptop or mobile device via USB-C Power Delivery (up to 100W)

Key specifications

• HDMI output: up to 4K (3840×2160) at 144 Hz; supports Extended and Mirrored modes
• USB: 1 × USB 3.2 (5 Gbps) Type-A port
• Power Delivery: USB-C PD 3.0, up to 100W (upstream charging)
• Physical: compact form factor; product weight approx. 0.0315 kg; colour: White
• Brand / model: j5create JCA399 (MPN: JCA399-N; EAN: 4712795088205)

How to use

Connect the JCA399 to a host device using its USB-C connector. Plug an HDMI cable from the adapter to an external monitor or TV and set the display mode on the host to Extended or Mirrored as required. Insert USB peripherals into the Type-A port to access storage or input devices. To enable laptop charging, connect a compatible USB-C power adapter to the adapter’s USB-C Power Delivery port; the adapter will provide up to 100W to the host where supported.

Recommendations

Use a high-quality HDMI cable rated for 4K 144 Hz and a USB-C power adapter that supports PD 3.0 and sufficient wattage for your laptop. Ensure your host device’s USB-C port supports DisplayPort Alt Mode and PD for full functionality.