Features: 4in1 multi-functional USB hub, with 3 * USB 3.0 ports, 1 * RJ45, allows to connect the mouse, U disk, keyboard, and mobile HDD, etc. Fast transmission, transfer 1GB movies in 3 seconds only, very convenient. RJ45 port delivers stable and smooth network connection, for efficient working, high-speed download, etc. Wide application, suitable for laptop, computers and mobile phones with USB ports. Aluminum alloy casing and surface anodizing process, ensure the good heat dissipation, stable transmission and also wear-resistance, fingerprint-resistance. Small and compact size design adds its portability, easy to fit a briefcase.