StarTech USB4 to Ethernet Adapter, 10GbE, Multi-Gigabit, Thunderbolt Compatible, 10GBASE-T/5G/2.5G NIC, USB4 Cable, Windows/Mac, TAA

This high-performance 10G Ethernet adapter is a robust and durable solution for IT professionals looking to add an RJ45 port to a USB-C enabled computer. It supports multi-gigabit speeds, including 10/5/2.5/1Gbps and 100Mbps Base-T. Additionally, 10GBASE-T and 5GBASE-T/2.5GBASE-T (NBASE-T) capabilities ensure compatibility with modern network switches and access points.

10GbE Network Speeds

Ideal for bandwidth-intensive tasks, server maintenance, high-performance storage, or streaming, this adapter is powered by the Marvell AQC107S chipset. It delivers reliable 10GbE performance and supports plug-and-play installation in Windows and macOS environments.

Quiet and Compact Design

Compact and travel-ready, this adapter measures just 4.27x2.9x1.14in (108.5x75x29mm). The aluminum chassis supports passive cooling for silent operation. Built-in LEDs indicate activity and link status at a glance.

Included Accessories

A detachable 19.6in (50cm) USB-C cable is included to support flexible installation and maintain consistent performance across compatible USB-C and Thunderbolt 4 ports.

This TAA-compliant 10G Ethernet adapter is backed for two years and includes free lifetime 24/5 multilingual technical support.

Note: Requires PCIe tunneling and may not work on all USB-C systems; USB-only mode is not supported.

More from the Manufacturer

This USB4 to 10GbE adapter instantly upgrades your computer to 10 Gigabit Ethernet, enabling ultra-fast file transfers, high-performance shared storage access, low-latency virtual desktops, and reliable connectivity for video editing, content creation, gaming, and other data-intensive workloads.

Modern laptops rarely include built-in 10 Gigabit Ethernet, yet many professionals still depend on high-speed wired networking. This adapter connects USB4 hosts to 10GBASE-T networks through a standard RJ45 port and is compatible with Thunderbolt 5, Thunderbolt 4, and Thunderbolt 3 systems. Its Goldilocks form factor makes it portable enough for travel or field work while remaining robust enough for workstation, lab, or permanent desk deployments. A detachable 20in / 50cm USB4 40Gbps cable provides flexible placement and easy serviceability.

Why Businesses Choose the USB4-10GBE-ETHERNET

Upgrade USB4 and Thunderbolt laptops with true 10 Gigabit Ethernet connectivity

Accelerate large file transfers, NAS access, virtualization, and high-bandwidth workflows

Maintain more consistent performance under heavy workloads with USB4’s advanced architecture

Designed for sustained high-throughput networking beyond traditional USB adapter limitations

Deploy a portable adapter that works for travel, temporary connections, or permanent desk setups

Integrate easily with existing copper networks using standard RJ45 10GBASE-T infrastructure

Simplify fleet compatibility with support for USB4, Thunderbolt 5, Thunderbolt 4, and Thunderbolt 3 hosts

Support government and regulated deployments with TAA-compliant sourcing

Q&A

Q: What does this USB4 to 10GbE Ethernet Adapter do?

A: It adds a 10 Gigabit Ethernet RJ45 port to a laptop or workstation using a USB4 connection. This allows USB4 or compatible Thunderbolt systems to connect to a 10GBASE-T network at up to 10Gbps. It is ideal for media production, large dataset transfers, virtualization, engineering workflows, highspeed NAS access, and other bandwidth-heavy tasks.

Q: What systems is this adapter compatible with?

A: It is designed for USB4 hosts and is compatible with Thunderbolt 5, Thunderbolt 4, and Thunderbolt 3 systems that support external networking devices. The connector uses the USB-C form factor, but the port must support USB4 or Thunderbolt functionality to provide the bandwidth required for 10 Gigabit Ethernet networking.

Q: Who is this adapter designed for?

A: It is ideal for IT professionals and power users who rely on laptops without built-in 10GbE ports but need high-speed wired networking. Common environments include engineering teams, media production, virtualization labs, data analysis, and shared storage workflows. It can also benefit advanced home users and gamers who want lower latency and faster network performance on high-speed networks.

Q: What network infrastructure do I need to achieve 10Gbps speeds?

A: To reach full 10 Gigabit Ethernet performance, you need a 10GBASE-T capable switch and appropriate cabling, typically Cat6a or better for standard distances. The adapter uses a standard RJ45 port, so it integrates into common copper Ethernet networks without requiring fiber modules.

Q: Is the Ethernet port backward compatible with slower networks?

A: Yes. The adapter supports auto-negotiation and works with lower Ethernet speeds supported by your network equipment, including 5GbE, 2.5GbE, and 1GbE. This allows the adapter to function in existing environments while organizations transition to full 10GbE infrastructure.

Q: Does the adapter require external power?

A: No. The adapter is bus-powered through the USB4 or Thunderbolt port. This simplifies deployment by eliminating the need for a separate power supply and helps maintain clean desk setups in offices, labs, and shared workspaces.

Q: What cable is included with the adapter?

A: The adapter includes a detachable 20in / 50cm USB4 40Gbps cable. The detachable design improves durability and flexibility because the cable can be replaced if needed or swapped for a different length without replacing the entire adapter.

Q: Why choose this adapter over other USB-C or Thunderbolt 10GbE adapters?

A: Many adapters support only a single interface generation or include fixed cables. This solution supports USB4 and multiple Thunderbolt generations, includes a high-quality detachable 40Gbps cable, and provides the performance required for professional workloads. It gives IT teams a flexible way to add 10 Gigabit Ethernet to modern laptop deployments.