1.USB Extension Adapter: Add up to 4 devices with the 4-port usb 3.0 hub. Makes a great travel companion to expand your laptop's usb 3.0 port into fours. 2.4-ports at Same Time: This usb port expander for laptop provides stable performance for 4 ports work simultaneously without any pressure and the temperature keeps within moderate range. 3.5Gbps Data Transfer Speed: Sync data at blazing speeds up to 5Gbps, which is more than 10 times faster than USB 2.0, fast enough to transfer an HD movie in seconds. 4.Saves your desk space,the handy and compact design an ideal way to fast access to your USB devices anywhere. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-YJL official store