This article covers j5create 4K Elite USB-C トラベルアダプター スペースグレー JCD3191.
Overview
The j5create 4K Elite USB-C Travel Adapter Space Gray (model JCD3191) is a compact hub designed to expand the connectivity of modern USB-C laptops. It features an integrated USB-C host cable, HDMI output capable of 4K at 60Hz, two 10Gbps USB-A ports, and a Gigabit Ethernet port. A standout feature is USB Power Delivery 3.1 support delivering up to 140W of pass-through charging, so you can keep your laptop juiced even while using the hub.
This travel adapter is ideal for professionals on the go, creative users needing an external monitor, or anyone who wants to leave a dongle-free desk without sacrificing essential ports. The plug-and-play nature means no driver installation is required on Windows, macOS, or Chrome OS.
Connectivity & Compatibility
- Host interface: Integrated USB-C cable compliant with USB-C, Thunderbolt 3/4, and USB4.
- Video output: HDMI 2.0 port supporting up to 4K at 60Hz (requires DisplayPort Alt Mode from the host).
- Data ports: Two USB-A ports with SuperSpeed 10Gbps transfer rates.
- Networking: Gigabit Ethernet (RJ-45) for stable wired connections.
- Power delivery: USB-C PD 3.1 input up to 140W; output to host depends on device support.
- Compatibility note: The host device must support USB-C Alt Mode for video output. Confirmed working with most modern laptops, tablets, and handhelds.
Product Info
Launched in late 2023, the JCD3191 is widely available through online retailers. Pricing hovers around ¥9,962 on Japanese online retailers, and the package includes the hub itself along with a quick-start guide. j5create backs it with a 2-year limited warranty.
Market positioning sits at the upper mid-range: it competes with premium travel hubs from brands like Anker and CalDigit but often undercuts them on price while offering 140W PD passthrough. The built-in cable eliminates the need for a separate USB-C cable, making it exceptionally travel-friendly.
Best Use Cases
- MacBook Pro/Air users: Add HDMI, USB-A, and Ethernet without sacrificing MagSafe or battery life?the 140W PD ensures rapid charging even on the 16-inch Pro.
- Frequent travelers: The compact form factor and captive cable mean one less thing to lose. Perfect for hotel rooms with limited desk space.
- Content creators: 4K60 output provides accurate previews on external monitors, while high-speed USB-A ports move large video files quickly.
- Remote workers with unstable Wi-Fi: Gigabit Ethernet delivers reliable connections for video calls and large file transfers.
- Gamers on the go: Wired networking reduces lag in online games. However, the 60Hz HDMI limit may frustrate those with 120Hz+ monitors.
- Who should pass: Anyone needing 8K output, Thunderbolt 5 speeds, or multiple HDMI connections should look at higher-end docks.
Product Disclosure (Amazon)
- Manufacturer: j5create
- Seller: Amazon US
- Fulfilled by: Amazon US
- ASIN: B0CQVSKKBF
- Note: This article covers a manufacturer-made product based on Amazon listing details.
