Description
Overview
The J5CREATE JCA399 is a compact USB‑C video adapter that adds a high‑performance HDMI output plus a USB‑A port and PD charging to a single USB‑C port. It is designed for users who need portable, high‑refresh external display support — for example laptop gamers or creators who want to connect to an HDMI display or TV while also keeping peripherals connected and charging the host.
Key features
- Supports HDMI output up to 4K (3840 x 2160) at 144 Hz when used with a host that provides DisplayPort Alt Mode v1.4 with DSC.
- USB 3.2 Type‑A port (5 Gbps) for keyboards, mice, storage and other peripherals.
- USB‑C Power Delivery (PD 3.0) pass‑through rated up to 100W — allows connection of a USB‑C charger to power/charge the host while using the adapter.
- 20 cm integrated USB‑C cable and compact ABS enclosure for easy transport and desktop use.
- Plug‑and‑play operation with no driver installation required on supported systems.
Compatibility & notes
- Requires a USB‑C port on the host that supports DisplayPort Alt Mode and USB Power Delivery (PD 2.0 or PD 3.0) to enable video output and passthrough charging.
- To reach 4K @ 144 Hz the video source must support DisplayPort 1.4 with DSC; systems with only DP 1.4 without DSC will typically be limited to 4K @ 60 Hz.
- Actual PD charging delivered to a laptop depends on the connected charger, cable and host hardware — delivered power can be lower than the 100W rating in some setups.
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