USB4 to 10G SFP+ Network Adapter — Key Highlights
- USB4 & Thunderbolt Compatible: Supports USB4 40Gbps, fully backward compatible with Thunderbolt 3, 4, and 5. Plug and play — no driver installation required on supported systems.
- Realtek RTL8127ATF Chipset: Industry-proven 10 Gigabit Ethernet chipset delivering stable, low-latency 10Gbps network performance.
- 10GbE SFP+ Port: Single SFP+ port supporting 10GBASE-R and 1000BASE-X for long-distance, interference-free fiber connectivity.
- Real-World Speed ~1.15 GB/s: Tested LAN transfer speed ideal for large file transfers, 4K/8K video editing, and real-time collaboration.
- Fanless Aluminum Design: Full aluminum alloy chassis with passive cooling — silent, durable, and only 2.5W power draw.
OS Compatibility
The Lekuo DTB3F11 USB4 to 10GbE adapter works seamlessly with Windows 11 and Windows 10, as well as Linux Kernel 2.4.x and above. Note: macOS is not currently supported.
Who Is the DTB3F11 For?
This USB4 10G fiber network adapter is built for professionals who demand maximum throughput and reliability:
- 📁 NAS & Private Cloud — High-speed access to network-attached storage over fiber
- 🎥 4K/8K Media Production — Smooth streaming and editing of high-resolution footage
- ☁ Virtualization & Cloud Infrastructure — High-throughput data exchange for VM environments
- 💹 High-Frequency Trading — Ultra-low latency for time-sensitive financial systems
- 🔬 Scientific Computing & Data Centers — Meets demanding bandwidth requirements
Technical Specifications
| Item | Specification |
|---|---|
| Model | DTB3F11 |
| Host Interface | USB4 40Gbps (Thunderbolt 3/4/5 compatible) |
| Network Port | 1 x SFP+ 10GbE |
| Chipset | Realtek RTL8127ATF |
| Supported Speed | 10GBASE-R / 1000BASE-X |
| Power Consumption | 2.5W (ultra-low, fanless) |
| Jumbo Frame | Up to 16KB |
| Duplex | Full Duplex |
| Tested LAN Speed | ~1.15 GB/s |
Package Contents
- 📦 1x Lekuo DTB3F11 USB4 to 10G SFP+ Network Adapter
- 🔌 1x Type-C 40Gbps Data Cable
- 📄 1x User Manual
About Lekuo
Founded in 2004, Lekuo (Shenzhen Lekuo Multimedia Co., Ltd.) is a specialist in computer expansion cards and industrial embedded systems. Lekuo products are trusted across manufacturing, aerospace, banking, automotive electronics, medical, and cloud storage industries worldwide.
Driver Download
Download the official Realtek RTL8127 driver for Windows and Linux compatibility: