This article covers j5 create JCA379 USB Type-C to HDMI＋USB3.0マルチアダプター.

Overview

The j5 create JCA379 is a compact multi-adapter designed for laptops and tablets equipped with a USB Type-C port. It adds one HDMI output and one USB 3.0 port, allowing you to connect an external monitor and USB peripherals simultaneously. It supports resolutions up to 2048×1152 and handles 1080p video playback smoothly. The USB 3.0 port offers transfer speeds up to 5 Gbps and is backward compatible with USB 2.0 and USB 1.1 devices. Its pocket-sized, cable-integrated design makes it highly portable. The reversible USB-C plug eliminates the hassle of plug orientation. Being bus-powered, it requires no external power adapter, making it easy to use on the go.

Connectivity & Compatibility

Host interface: USB Type-C Outputs: HDMI (up to 2048×1152), USB 3.0 Type-A (5 Gbps) Compatible with: Windows laptops, MacBooks, Chromebooks, and tablets with a USB-C port supporting DisplayPort Alt Mode Display modes: Primary, Extended, Mirror USB 3.0 port supports USB 2.0/1.1 devices Note: The host device must support DisplayPort Alt Mode over USB-C for video output to work. Some devices may not be compatible.

Product Info

The j5 create JCA379 was released around 2018 and sits in the entry-to-mid-range segment of USB-C multi-adapters. Priced around ¥3,000–¥4,000, it offers a good balance of affordability and essential functionality. The manufacturer provides a one-year warranty. The package includes only the adapter itself; no drivers are required. It is widely available on and at electronics retailers. Its market position is that of a simple, no-frills adapter for users who need only HDMI output and one USB port. Compared to full-featured docking stations, it has fewer ports but is significantly cheaper and more portable.

Best Use Cases

Extending laptop displays: Connect an external monitor for a dual-screen setup, ideal for remote work or presentations. Adding USB ports to thin laptops: If your laptop only has USB-C ports, this adapter gives you a standard USB-A port for a mouse, flash drive, or other peripherals. * Budget-conscious users: For those who need basic expansion without spending on a full docking station, this adapter offers excellent value at around ¥3,000.

Product Disclosure (Amazon)

  • Manufacturer: j5create
  • Seller: オンラインショップ t-store
  • Fulfilled by: Amazon
  • ASIN: B077PQVL24
  • Note: This article covers a manufacturer-made product based on Amazon listing details.