Features: brand new and high quality Easy to Use: No driver required, hot swappable, plug and for play, positive and negative pluggable. Outstanding Compatibility: Easily connect USB external devices such as U disk, mouse, keyboard, gamepad, printer, etc. but the mobile hard disk can only be connected to the 3.0 interface, and its capacity cannot exceed 1TB. Simultaneous 4 Ports: This USB3.0 port expander provides stable performance for 4 ports working simultaneously without any stress and keeping the temperature within a moderate range. Ultra Slim and Portable: Ultra slim design for laptop, small enough to be functional without taking up tons of space, a good helper for home, office, business trip or anywhere you go. Support system: for Windows 2000/2003/ME/XP/Vista/WIN 7/8/10 or for Mac OS 8.1 or higher. Specifications: Connection Interface: 1x USB 3.0+3x USB 2.0 Plug Standard: USB 3.0 Material: Aluminum Alloy+Plastic Color:Silver/for Grey Size: Approx. 22 for cm/ 8.6 inches Note: 1.Please allow 1-2cm errors due to manual measurement, make sure that you do not mind before you order. 2.Due to the difference between different monitors, the picture may not reflect the actual color of the item. Package includes: 1x USB Hub Splitter