RJ45 Ethernet LAN Port & Warranty: This Surface Laptop 5/Laptop 4/Laptop 3/Laptop Go/Laptop Go2 Hub Docking Station with RJ45 ethernet port support 10/100Mbps wired networks, just plug in an ethernet cable, you can enjoy the ultra-fast 10/100Mbps ethernet speeds and the reliability, which is faster and more stable than Wi-Fi. If you have any problems about this Surface Laptop Hub Docking Station, please feel free to let us know, we will help you solve it. Audio and Mic 2 in 1 Port & SD/TF Card Slot: Transform your Surface Laptop Hub into a versatile workstation with the Surface featuring a 2 in 1 port for audio and mic, allowing you to effortlessly connect your headphones or microphone. Built-in SD/TF card slot, Maximum support 2TB. Compatible with SDXC, SDHC, SD, MMC, TF, Micro SDXC, Micro SD, Micro SDHC, Mini SD, providing you with the flexibility to expand your device's storage capacity, and never worry about running out of space again. 4K@30HZ Dual Display Modes: Experience the ultimate multitasking with the dual display modes offered by the surface laptop dock, the mirroring and expansion mode to present you with 4K@30Hz HD picture, improve the efficiency of office and entertainment. Seamlessly connect your Microsoft Surface Laptop to any HDMI display with the high-performance Surface Laptop Adapter, Enjoy high-quality video and audio transmission, perfect for presentations, gaming, or streaming your favorite content. Super Speed USB 3.0 5Gbps Transfer: Our surface laptop hub offers high-speed data transfer capabilities, USB 3.0 A ports allowing you to effortlessly transfer files and documents at 5Gbps, backwards compatible with USB 2.0 devices. Simultaneously, the Type C Port which transfer rate is 480Mbps, allowing you to seamlessly connect multiple peripherals such as external hard drives, keyboards, and mice for increased efficiency and convenience.(Note: USB C port only supports data transfer). Surface Laptop 5/Laptop 4/Laptop 3/Laptop Go/Laptop Go2 Hub Docking Station: This Microsoft Surface Docking Station is specially designed for Surface Laptop 3/4/5/Laptop Go/Go2; (Note:this Surface Docking Station can't work with Surface Case); Surface laptop adapter features 4K@30HZ HDMI, 10/100Mbps RJ45 Ethernet, 2 USB 3.0 ports, USB C 2.0 ports, 3.5mm Audio and TF/SD card reader, expand your Surface Laptop's capabilities simply ; Easy to use, Plug and play.