Aluminum alloy multiport hub with a builtin advanced controller provides safe, efficient expansion for laptops. Safe and reliable operation: supports all ports working together without delays, with builtin protections for overcurrent, overvoltage, short circuits, and overheating to enhance security. Durable construction and heat management: aluminum alloy housing combined with an advanced internal chip designed for effective heat dissipation. Comprehensive port expansion: 1x RJ45 Ethernet port (100 Mbps); 1x HDMI output (4K x 2K); 1x USBC port; 1x SD card slot; 1x TF (microSD) card slot; 2x USB 2.0 ports; 1x Power Delivery 100W fast charging capability. speed, stable multiport performance: supports fast, reliable data transfer with multiple devices connected simultaneously. Use scenarios Workspace setup: extend a laptop to a 4K display via HDMI, use a wired network through the RJ45 port, connect USB peripherals, and access SD/TF cards while charging the laptop with PD 100W. On the go or in meetings: plug into a projector or external display, use wired networking when WiFi is unavailable, and quickly transfer files from SD or TF cards for presentations. Content creation workflow: import media from SD/TF cards, connect external storage or peripherals, view output on a monitor, and keep the laptop charged through PD 100W while working.