Overview

The StarTech.com USB-C Gigabit Ethernet Adapter US1GC30A is a compact, reliable solution for adding a wired Gigabit Ethernet port to any USB-C or Thunderbolt 3/4 equipped laptop, tablet, or desktop. Powered by the Realtek RTL8153 chipset, it supports USB 3.2 Gen 1 (5Gbps) and delivers full 10/100/1000 Mbps network speeds. Its silver aluminum housing complements modern laptops like MacBook and Chromebook, and the lightweight design makes it easy to carry in a bag. This adapter is ideal for environments where Wi-Fi is unreliable or where a wired connection is required for security or stability. It supports plug-and-play operation on Windows, macOS, Linux, and Chrome OS, so no driver installation is needed for most systems.

Connectivity & Compatibility

Interface: USB Type-C (USB 3.2 Gen 1 / 5Gbps), backward compatible with USB 3.0 and USB 2.0 Network standards: IEEE 802.3 10BASE-T, 100BASE-TX, 1000BASE-T (Gigabit Ethernet) Supported devices: Laptops, desktops, and 2-in-1 tablets with USB-C or Thunderbolt 3/4 ports Supported OS: Windows 7 and later, Windows Server, macOS 10.14+, Linux (kernel 4.11–5.9.16 LTS), Chrome OS * Power: USB bus-powered, no external power adapter required. Integrated cable eliminates the need for a separate USB-C cable.

Product Info

Release: Available since 2015 (long-running model) Price: Approximately ￥5,874 (tax included) on Warranty: 2-year manufacturer warranty from StarTech.com Accessories: Adapter with integrated USB-C cable, quick-start guide * Market position: Entry to mid-range. A trusted, well-reviewed USB-C Ethernet adapter that balances reliability, compatibility, and affordability.

Best Use Cases

Users in areas with unstable Wi-Fi: If your home or office Wi-Fi is congested or has dead zones, this adapter provides a stable, wired Gigabit connection. Ideal for video conferencing, large file transfers, and online gaming where latency matters. Security-conscious professionals: Wired connections are inherently more secure than public Wi-Fi. This adapter lets you quickly add a wired Ethernet port to any USB-C laptop, reducing exposure to network-based threats. Owners of thin-and-light laptops (MacBook, Chromebook, etc.): Many modern ultrabooks lack a built-in Ethernet port. This compact adapter adds one without adding bulk, and its silver finish matches Apple and many other laptops aesthetically.

Things to Consider

This adapter is USB-C only. It will not work with USB-A ports. If you need a USB-A Ethernet adapter, look for a different model. While it supports Gigabit speeds (1000 Mbps), actual throughput depends on your host device's USB controller and network infrastructure. For best results, use a USB 3.0 or higher port. The integrated cable is approximately 15 cm (6 inches) long, which is convenient for direct connection on a desk but may be too short to reach a distant router. Consider a USB-C extension cable or a longer Ethernet patch cable if needed. * On older Linux kernels (pre-5.9.16 LTS), additional driver installation may be required. Most modern distributions work out of the box.

Product Disclosure (Amazon)

  • Manufacturer: StarTech.com(スターテック)
  • Seller: RADICAL (インボイス対応/適格事業者)
  • Fulfilled by: RADICAL (インボイス対応/適格事業者)
  • ASIN: B015FTWD5U
  • Note: This article covers a manufacturer-made product based on Amazon listing details.