Universal three-in-one USB interface Key benefits Expands a single USB port into three usable ports so you can connect multiple devices at once and avoid repeated plugging and unplugging. Plug-and-play compatibility with a wide range of USB devices: keyboards, mice, USB flash drives, external hard drives and other USB peripherals. High-speed data transmission capable of driving external hard disks, including large-capacity drives greater than 1 TB, so large file copies complete faster and workflows are smoother. Built-in safety protection cover for the interface helps prevent dust and damage when not in use. Main features Function: 3-way USB hub for simultaneous connection of multiple USB peripherals and high-capacity storage devices. Compatibility: Works with standard USB interface devices (keyboards, mice, U-disks, external HDDs) without drivers. Performance: Supports high-speed data transfer suitable for copying large files and running external hard disks. Durability: Protective cover safeguards connector and helps extend service life. Practical use scenarios Office productivity: Connect a keyboard, mouse and USB drive at the same time to a laptop for a tidy, efficient workstation without constantly swapping devices. Large-file transfer and backup: Attach an external hard disk (1 TB or larger) to quickly back up photos, video or project files with reliable high-speed transfer. Travel and presentations: Add three USB ports to a conference laptop to connect a presenter remote, USB drive and wired input device for a trouble-free presentation setup. What you get A simple, reliable three-port USB interface that increases connectivity, protects the connector when idle, and handles high-capacity storage needs with plug-and-play convenience.