USB 2.0 HUB: Expands your laptop, Ultrabook or computer’s USB 2.0 port to 4 external USB 2.0 ports. DATA TRANSFER & CHARGING: Supports USB 2.0 data transfer rates up to 480 megabits per second. Ports can provide up to 1.5A when USB Micro-B port is connected to a second computer USB port or USB charger. Backward compatible with previous USB generations. PERFECTLY SIZED FOR TRAVEL: Fits easily into your pocket, backpack, briefcase or laptop bag. Built-in 6-inch cable is perfect for travel. Hub measures just 1.00 x 3.90 x 5.30 inches. EASY TO USE: Plug and play—no drivers or software needed. Bus-powered unit requires no external power supply. RELIABLE PRODUCT FULLY BACKED AND SUPPORTED: This product is covered by a 3-Year Limited Warranty and is supported by Tripp Lite's Chicago-based expert technical support team over phone and email.