Fully compatible with USB (Universal Serial Bus) 2.0 specification Add an extra 4 USB (Universal Serial Bus) 2.0 ports Supporting different data transfer rate at 480 Mb 12 Mb 1.5 Mb Over current protection Real plug & playhot swappable Powerful Y cable suitable for all USB (Universal Serial Bus) devices WIN 982000MEXP USB (Universal Serial Bus) 4 port high-speed hub can provide high-speed data transfer at a rate of 480 Mbps. It is fully compliant with USB (Universal Serial Bus) 2.0 specifications. It supports USB (Universal Serial Bus) 2.01.11.0 specifications. A real compact size high speed plug-n-play hub