j5create JCD398 USB-C Dual 4K HDMI Mini Dock, 10Gbps USB Hub, Gigabit Ethernet & 100W Power Delivery

The j5create JCD398 USB-C Dual 4K HDMI 10Gbps Mini Dock is designed to expand laptop connectivity through a single USB-C connection. With dual HDMI display outputs, high-speed USB 3.2 Gen 2 ports, Gigabit Ethernet, and USB-C Power Delivery 3.0, multiple peripherals can be connected through one compact docking station. Support for dual external displays is provided, with resolutions of up to 4K Ultra HD available depending on the connection method, host computer capabilities, and display configuration. Compatibility is provided for supported Windows laptops, MacBook computers, and other USB-C devices equipped with the required video output functionality.

Designed for professional workstations, home offices, business environments, and portable computing setups, this USB-C multiport adapter helps reduce desktop cable clutter while expanding the available connectivity options. Two USB-A 10Gbps ports are provided for external storage devices, keyboards, mice, and other USB peripherals, while a Gigabit Ethernet port is included for wired network connectivity. Power Delivery 3.0 passthrough of up to 100W is supported when a compatible USB-C power adapter is connected, allowing a supported laptop or tablet to be charged while connected to other peripherals. A 3.5mm combination audio jack is also integrated for compatible headphones and speakers.

With its compact aluminum enclosure and space-saving design, the j5create JCD398 mini docking station is suited to desks with limited space and mobile work environments. Dual HDMI outputs are provided for expanded screen configurations, making additional workspace available for multitasking, productivity applications, presentations, and content management. High-speed data transfer of up to 10Gbps is supported through the USB-A ports, while the integrated audio, networking, display, and charging connections are consolidated into one convenient USB-C docking solution.

Key Features and Benefits

1. Dual 4K HDMI Display Connectivity

Two HDMI display outputs are provided for connecting compatible external monitors or displays. One HDMI output supports resolutions of up to 3840 × 2160 at 60Hz, while the second supports up to 3840 × 2160 at 30Hz. Expanded screen space can be used for multitasking, office applications, presentations, and entertainment, subject to the supported display configuration.

2. USB-C Mini Dock with 10Gbps Data Transfer

Two USB-A 3.2 Gen 2 ports are integrated, with data transfer rates of up to 10Gbps supported. External hard drives, solid-state drives, flash drives, and compatible USB peripherals can be connected through the dock, allowing data-intensive workflows to be handled more efficiently.

3. Up to 100W USB-C Power Delivery 3.0

USB-C Power Delivery 3.0 passthrough of up to 100W is supported for compatible laptops and tablets. Power can be delivered through the dock when a suitable USB-C power adapter is connected to the dedicated PD input, reducing the need for separate charging and peripheral connections.

4. Integrated Gigabit Ethernet

A built-in RJ45 Gigabit Ethernet port is included for wired network connectivity at supported speeds of 10/100/1000 Mbps. A stable network connection can be established for video conferencing, large file transfers, online collaboration, and other network-dependent tasks.

5. Built-In 3.5mm Audio Combo Jack

A 3.5mm combination audio jack is provided for compatible headphones and speakers. Audio connectivity is consolidated into the docking station, allowing supported audio accessories to be connected without occupying a separate port on the host computer.

6. Windows and macOS Compatibility

Compatibility is provided for Windows 10, Windows 11, and macOS 10.14 or later, subject to the required USB-C functionality and driver installation. Support for MacBook computers with Apple M-series processors is promoted, with dual external display connectivity dependent on the particular computer model and supported display configuration.

7. Compact Aluminum Construction

A space-saving enclosure made of aluminum is used to provide a compact and portable design. The Space Grey finish complements compatible laptops and workstation accessories, while the lightweight construction makes the dock suitable for home offices, corporate desks, and travel setups.

8. Convenient Peripheral Expansion

Multiple connectivity functions are combined in one USB-C mini dock. External displays, USB accessories, wired networking, audio devices, and compatible charging equipment can be connected through the available ports, helping to simplify workstation organization.

9. Hot-Swappable USB Connectivity

Hot-swappable USB functionality is supported, allowing compatible USB peripherals to be connected or disconnected without requiring a system reboot. This feature is useful when external storage devices and other USB accessories need to be changed during regular computer use.

10. Compact Solution for Modern Workstations

The integrated connectivity options are designed to support productivity-focused workstations without requiring a full-size docking station. The compact dimensions and short attached cable help keep the dock close to the host computer while minimizing the space occupied by additional connectivity hardware.

Technical Specifications

General Information

• Brand: j5create

• Model: JCD398

• Product Name: USB-C Dual 4K HDMI 10Gbps Mini Dock

• Product Type: USB-C docking station / multiport adapter

• Primary Functions: Dual HDMI display output, USB data transfer, Gigabit Ethernet, USB-C Power Delivery passthrough, and audio connectivity

• Host Connector: 1 × USB-C male

• Video Outputs: 2 × HDMI female

• Supported Displays: Up to 2 external displays

• Color: Space Grey

• Enclosure Material: Aluminum

Hardware and Connectivity

• HDMI Port 1: 1 × HDMI, up to 4K at 60Hz

• HDMI Port 2: 1 × HDMI, up to 4K at 30Hz

• USB Ports: 2 × USB-A 3.2 Gen 2

• USB Data Transfer Rate: Up to 10Gbps

• Ethernet Port: 1 × RJ45 Gigabit Ethernet

• Supported Ethernet Speeds: 10/100/1000 Mbps

• Audio Port: 1 × 3.5mm combination audio jack

• USB-C Power Input: 1 × USB-C PD-in

• Power Delivery Standard: USB Power Delivery 3.0

• Maximum Power Delivery Passthrough: Up to 100W

• Audio Support: Yes

• HDMI Audio: 2.1-channel audio support

• Power Source: Bus-powered or self-powered

Display Performance

• Maximum Number of Displays: 2

• HDMI Output 1: Up to 3840 × 2160 at 60Hz

• HDMI Output 2: Up to 3840 × 2160 at 30Hz

Maximum Supported Display Resolutions by Connection Method

Single Display via DisplayPort Alternate Mode (DP Alt Mode):

• 3840 × 2160 at 60Hz

• 2560 × 1440 at 120Hz

• 1920 × 1080 at 144Hz

Single Display via USB Graphics:

• 3840 × 2160 at 30Hz

• 2560 × 1440 at 60Hz

• 1920 × 1080 at 60Hz

Dual Display:

• 3840 × 2160 at 60Hz via DisplayPort Alternate Mode

• 3840 × 2160 at 30Hz via USB Graphics

Actual display performance is dependent on the host computer, graphics capabilities, driver configuration, connected monitors, and selected display mode. The host device must support DisplayPort 1.4 to achieve 4K resolution at 60Hz through DisplayPort Alternate Mode.

Power Specifications

• Input Voltage: 20V

• Input Current: 5A

• Output Voltage: 20V

• Output Current: 4.5A

• Power Consumption: ≤ 700mA

• Power Delivery Output: Up to 100W via USB-C

Physical Specifications

• Product Width: 5.8 inches (147.25mm)

• Product Depth: 2.24 inches (56.98mm)

• Product Height: 0.58 inches (14.85mm)

• Product Weight: 4.00 oz (113.5g)

• Attached Cable Length: 7.8 inches (198.12mm)

• Enclosure Type: Aluminum

Environmental Specifications

• Operating Temperature: 32°F to 98°F (0°C to 37°C)

• Storage Temperature: 14°F to 140°F (-10°C to 65°C)

• Operating Humidity: Below 85%, non-condensing

• Storage Humidity: Below 85%, non-condensing

System Requirements and Compatibility

• Windows Compatibility: Windows 10 and Windows 11

• macOS Compatibility: macOS 10.14 or later

• Required Host Connection: USB-C port supporting DisplayPort Alternate Mode and USB Power Delivery 2.0, 3.0, or 3.1

• 4K at 60Hz Requirement: DisplayPort 1.4 support on the host device

• Display Requirement: A 4K-capable monitor is required for 3840 × 2160 resolution

• Driver Requirements: Display driver installation is required for macOS and Windows

Compatibility Notes:

• Windows may automatically install the required driver when the dock is connected, provided that network access and administrative permissions are available.

• Connection to a USB-C port without Power Delivery support is possible, but power passthrough to the host device will not be available.

• A compatible USB-C power adapter should be connected to the PD input when high-powered USB peripherals are used to help maintain maximum performance.

• When a compatible USB-C power adapter is connected, power can be supplied to the dock and its attached peripherals while the host laptop is charged.

• Dual external display support and available resolutions are subject to the host computer's hardware, graphics capabilities, operating system, drivers, and display configuration.

Package Contents

• 1 × j5create JCD398 USB-C Dual 4K HDMI 10Gbps Mini Dock

• 1 × Quick Installation Guide (QIG)

Country of Origin

• Country of Origin: Taiwan

Conclusion

The j5create JCD398 USB-C Dual 4K HDMI Mini Dock provides a compact connectivity solution for expanding supported laptops and compatible computers with dual HDMI displays, 10Gbps USB data transfer, Gigabit Ethernet, 100W Power Delivery passthrough, and a 3.5mm audio connection. Its aluminum construction, portable dimensions, and consolidated connectivity options make it suitable for business workstations, home offices, multitasking environments, and mobile productivity setups. With support for Windows and macOS systems, this USB-C multiport docking station is designed to simplify peripheral connections, expand available screen space, and improve workstation organization while maintaining a compact footprint.