EASY SETUP: No driver installation required; Plug & Play and Hot Swappable. Does NOT support charging. COMPATIBILITY: Reverse compatible with USB 1.1 devices. Use with PC, MacBook, iMac, Mac mini, XPS, Flash Drives, & any other USB compatible devices. SPEEDS: Supports transfer speeds of up to 480Mbps (USB 2.0), & 12Mbps (USB 1.1). Fast enough to transfer large files in seconds. CONVENIENCE: LED Indicators display power status for each port. Individual on/off switches enable you to easily connect and disconnect your devices with the push of a button. EXPANSION: Instantly add 4 USB 2.0 Ports to Any compatible device. Transform a single USB port into a full work station.